9. The value of the expression, (2a-7)(2a - 7) =
a) 4a2 +14a +49
b) 4a²-14a-49
c) 4a.14a +49
d) none of these
Answers
Answered by
0
Answer:
the answer of the question is 4a²-28a+49 so d is correct
Answered by
0
Answer:
4a²-28a+49
Step-by-step explanation:
(2a-7) (2a-7)
= 2a(2a-7)-7(2a-7)
= 4a²-14a-14a+49
= 4a²-28a+49
Option D is correct
correct explanation
hope you understand
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