Question

hello can someone please tell what we get on factorising x²+8x+15 .and can you please elaborate and explain it step to step​

Answer 1

Answer:

Keep the x^2 and the number on the end the same, but 8x can be written as 3x + 5x. This gives us a new equation - x^2 +3x +5x + 15. This new equation can now be factorised. Factorise the first two terms, by taking out the common factor.

Step-by-step explanation:

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Answer 2

Answer:

x^2 +8x +15

x^2+(5+3)x+15

x^2+5x+3x+15

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

(x+5) (x+3)

x=-5 answer

x=-3 answer