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x\times 24+x\left(x+2\right)=\left(x+2\right)\times 24
Variable x cannot be equal to any of the values -2,0 since division by zero is not defined. Multiply both sides of the equation by x\left(x+2\right), the least common multiple of x+2,x.
x\times 24+x^{2}+2x=\left(x+2\right)\times 24
Use the distributive property to multiply x by x+2.
26x+x^{2}=\left(x+2\right)\times 24
Combine x\times 24 and 2x to get 26x.
26x+x^{2}=24x+48
Use the distributive property to multiply x+2 by 24.
26x+x^{2}-24x=48
Subtract 24x from both sides.
2x+x^{2}=48
Combine 26x and -24x to get 2x.
2x+x^{2}-48=0
Subtract 48 from both sides.
x^{2}+2x-48=0
All equations of the form ax^{2}+bx+c=0 can be solved using the quadratic formula: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. The quadratic formula gives two solutions, one when ± is addition and one when it is subtraction.
x=\frac{-2±\sqrt{2^{2}-4\left(-48\right)}}{2}
This equation is in standard form: ax^{2}+bx+c=0. Substitute 1 for a, 2 for b, and -48 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-2±\sqrt{4-4\left(-48\right)}}{2}
Square 2.
x=\frac{-2±\sqrt{4+192}}{2}
Multiply -4 times -48.
x=\frac{-2±\sqrt{196}}{2}
Add 4 to 192.
x=\frac{-2±14}{2}
Take the square root of 196.
x=\frac{12}{2}
Now solve the equation x=\frac{-2±14}{2} when ± is plus. Add -2 to 14.
x=6
Divide 12 by 2.
x=-\frac{16}{2}
Now solve the equation x=\frac{-2±14}{2} when ± is minus. Subtract 14 from -2.
x=-8
Divide -16 by 2.
x=6 x=-8
The equation is now solved.
x\times 24+x\left(x+2\right)=\left(x+2\right)\times 24
Variable x cannot be equal to any of the values -2,0 since division by zero is not defined. Multiply both sides of the equation by x\left(x+2\right), the least common multiple of x+2,x.
x\times 24+x^{2}+2x=\left(x+2\right)\times 24
Use the distributive property to multiply x by x+2.
26x+x^{2}=\left(x+2\right)\times 24
Combine x\times 24 and 2x to get 26x.
26x+x^{2}=24x+48
Use the distributive property to multiply x+2 by 24.
26x+x^{2}-24x=48
Subtract 24x from both sides.
2x+x^{2}=48
Combine 26x and -24x to get 2x.
x^{2}+2x=48
Quadratic equations such as this one can be solved by completing the square. In order to complete the square, the equation must first be in the form x^{2}+bx=c.
x^{2}+2x+1^{2}=48+1^{2}
Divide 2, the coefficient of the x term, by 2 to get 1. Then add the square of 1 to both sides of the equation. This step makes the left hand side of the equation a perfect square.
x^{2}+2x+1=48+1
Square 1.
x^{2}+2x+1=49
Add 48 to 1.
\left(x+1\right)^{2}=49
Factor x^{2}+2x+1. In general, when x^{2}+bx+c is a perfect square, it can always be factored as \left(x+\frac{b}{2}\right)^{2}.
\sqrt{\left(x+1\right)^{2}}=\sqrt{49}
Take the square root of both sides of the equation.
x+1=7 x+1=-7
Simplify.
x=6 x=-8
Subtract 1 from both sides of the equation.