Evaluate
using suitable identity solve.
（x+3）（x+7）
Answers
Answered by
2
Answer:
x(x+7) +3(x+7)
x^2+7x+3x+21
x^2+10x+21
Answered by
5
Answer:
(x+a)(x+b) = x²+(a+b)x+ab
= x²+(3+7)x+3×7
= x²+10x+21
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