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Step-by-step explanation:
8. (x+a)(x+b)
x(x+b)+a(x+b)
x²+xb+ax+ab. Ans.
a. It is already in simplified form, so the answer is same which is x²-a²
b. It is already in simplified form, so the answer is same which is ax²+bx²
c. x²+(a+b)x+ab
x²+ax+bx+ab {after opening the bracket}. Ans.
d. x²-ax-bx+ab
x²-ax-bx+ab {after opening the bracket}. Ans.
Answered by
1
Answer:
c) option
Step-by-step explanation:
(x + a)(x + b)
= x(x + b) + a(x + b)
= x^2 + xb + xa + ab
= x^2 + (a + b)x + ab
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