How do you find the solution to the quadratic equation $36 = 5 x + x^{2}$ $36=5x+x^2$ ?

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How do you find the solution to the quadratic equation $36 = 5 x + x^{2}$ $36=5x+x^2$ ?

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Answer 1 · 2015-05-09T14:42:31

x= -9,4

Factorise the quadratic $x^{2} + 5 x - 36 = 0$ $x^2+5x-36=0$ by splitting the middle term $x^{2} + 9 x - 4 x - 36$ $x^2 +9x-4x-36$ =0. The factors would be (x+9)(x-4)=0. The solution would be x= -9, 4

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How do you find the solution to the quadratic equation $36 = 5 x + x^{2}$ $36=5x+x^2$ ?

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How do you find the solution to the quadratic equation $36 = 5 x + x^{2}$ $36=5x+x^2$ ?