Expand
16x^{2}+90x+81
Evaluate
\left(2x+9\right)\left(8x+9\right)
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16x^{2}+18x+72x+81
Apply the distributive property by multiplying each term of 2x+9 by each term of 8x+9.
16x^{2}+90x+81
Combine 18x and 72x to get 90x.
16x^{2}+18x+72x+81
Apply the distributive property by multiplying each term of 2x+9 by each term of 8x+9.
16x^{2}+90x+81
Combine 18x and 72x to get 90x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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