Solve left(85-85.5right)^2+left(85-85.5right)^2+left(87-85.5right)^2+left(81-85.5right)^2+{left(80-85.5right)}^2+{left(79-85.5right)}^2+{left(87-85.5right)}^2+{left(93-85.5right)}^2

$${ \left(85-85.5 \right) }^{ 2 } + { \left(85-85.5 \right) }^{ 2 } + { \left(87-85.5 \right) }^{ 2 } + { \left(81-85.5 \right) }^{ 2 } + { \left(80-85.5 \right) }^{ 2 } + { \left(79-85.5 \right) }^{ 2 } + { \left(87-85.5 \right) }^{ 2 } + { \left(93-85.5 \right) }^{ 2 }$$

Evaluate

$$154$$

Solution Steps

Subtract 85.5 from 85 to get -0.5.

$$\left(-0.5\right)^{2}+\left(85-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Calculate -0.5 to the power of 2 and get 0.25.

$$0.25+\left(85-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 85 to get -0.5.

$$0.25+\left(-0.5\right)^{2}+\left(87-85.5\right)^{2}+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Calculate -0.5 to the power of 2 and get 0.25.

$$0.25+0.25+\left(87-85.5\right)^{2}+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Add 0.25 and 0.25 to get 0.5.

$$0.5+\left(87-85.5\right)^{2}+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 87 to get 1.5.

$$0.5+1.5^{2}+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Calculate 1.5 to the power of 2 and get 2.25.

$$0.5+2.25+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Add 0.5 and 2.25 to get 2.75.

$$2.75+\left(81-85.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 81 to get -4.5.

$$2.75+\left(-4.5\right)^{2}+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Calculate -4.5 to the power of 2 and get 20.25.

$$2.75+20.25+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Add 2.75 and 20.25 to get 23.

$$23+\left(80-85.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 80 to get -5.5.

$$23+\left(-5.5\right)^{2}+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Calculate -5.5 to the power of 2 and get 30.25.

$$23+30.25+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Add 23 and 30.25 to get 53.25.

$$53.25+\left(79-85.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 79 to get -6.5.

$$53.25+\left(-6.5\right)^{2}+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Calculate -6.5 to the power of 2 and get 42.25.

$$53.25+42.25+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Add 53.25 and 42.25 to get 95.5.

$$95.5+\left(87-85.5\right)^{2}+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 87 to get 1.5.

$$95.5+1.5^{2}+\left(93-85.5\right)^{2}$$

Calculate 1.5 to the power of 2 and get 2.25.

$$95.5+2.25+\left(93-85.5\right)^{2}$$

Add 95.5 and 2.25 to get 97.75.

$$97.75+\left(93-85.5\right)^{2}$$

Subtract 85.5 from 93 to get 7.5.

$$97.75+7.5^{2}$$

Calculate 7.5 to the power of 2 and get 56.25.

$$97.75+56.25$$

Add 97.75 and 56.25 to get 154.

$$154$$

Factor

$$2\times 7\times 11$$