1.

Find the zeroes of x square+2x_15​

Answer»

Answer:

3 and - 5

Step-by-step explanation:

{x}^{2} + 2x - 15

FIRST FACTORIZE it.

{x}^{2} + 5x - 3x - 15

x(x + 5) - 3(x + 5)

(x - 3)(x + 5)

So RHE zeroes are

x - 3 = 0 \\ x = 3

And

x + 5 = 0 \\ x = - 5


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