Question

x^2 + 8x + 15 factorise please

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Answer 1

Step-by-step explanation:

x^2 + 8x + 15

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

= (x+3)(x+5)

Answer 2

Answer:

The given polynomial:

x²+8x+15=0

Here, 5 and 3 are the factors of 15 that add up to 8.

3×5=15

3+5=8

Factorising using splitting the middle term,

x²+8x+15=0

x²+3x+5x+15=0

x(x+3) +5 (x+3)=0

(x+3)(x+5)=0

Therefore, Answer=> (x+3) (x+5) =0