find the following product (5/a+7/2b)(5/a-7/2b)
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Answer:
25/a²-49/4b²
Step-by-step explanation:
(5/a+7/2b)(5a-7/2b)
It is of the form (a+b)(a-b)
(a+b)(a-b)=a²-b²
so,
(5/a+7/2b)(5/a-7/2b)= (5/a)²-(7/2b)²=25/a²-49/4b²
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