how to factories 4a square - 25b square +30b -9
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Step-by-step explanation:
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(2a+5b-3)(2a-5b+3)
Step-by-step explanation:
4a²-25b²+30b-9
by using the formula (a-b)²=a²-2ab+b²
4a²-(25b²-30b+9) [take the - sign common
4a²-(5b-3)²
by using the formula a²-b²=(a+b)(a-b)
(2a+5b-3)(2a-5b+3)
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