Factorise x²+6x+9-25b²
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(x+5b)(x-5b)+3(2x+3)
Step-by-step explanation:
x²+6x+9-25b²
= x²-25b²+6x+9
= (x)²-(5b)²+3(2x+3)
= (x+5b)(x-5b)+3(2x+3)
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