Question

12. (x + a)" (x + b)",​

Answer 1

(x+a)(x+b)

=x^2+(a+b)x+ab

=x^2+ax+bx+ab

this is the formula

hope you like it

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Answer 2

Answer:

Step-by-step explanation:

It's an identity.

(x+a)(x+b)=x^3+(a+b)x+(ab).