Question

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Answer 1

Answer:

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Step-by-step explanation:

${x}^{2} + 2x + 15$

on writing the factories of 15x^2 we get, -3x,-5x

x^2+(-3x-5x)+15 = 0

x^2-3x-5x+15 = 0

Take x as comman so,

x(x-3)-5(x-3) = 0

(x-3)(x-5) = 0

Now,

(x-3)

x-3 = 0

x = 3

(x-5)

x-5 = 0

x = 5

Therefore the roots are

3 and 5