PLZ ANSWER ASAP!!!! Doc is below its algebra
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Answer:
a). 7dg - 9de
= d(7g - 9e)
b). (x+2)(x+5)
by identity (x+a)(x+b)= x^2 + (a+b)x + ab
= x2 + (2+5)x + 2×5
= x2 + 7x + 10
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