Is there a way to solve (2x - 5)^2 using the formula a^2 - b^2 = (a-b) (a+b)?
1 answer:
Answer:
yes
soln
(2x)² - (5)²
= (2x - 5)(2x + 5)
4x² + 10x - 10x - 25
4x² - 25
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