simlify (2x+5)^2 -(2x-5)^2
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Hey buddy
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Here's your answer
Hope it helps you
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dweep65:
I havent understood that how it will be 20x in the answer
2×2x×5 = 20x
identity (a+b)² and (a-b)² is used
can you explain to me in detail again plsssss
(2x+5)² = 4x²+25 +20x
(2x-5)²=4x²+25-20x
(2x+5)²-(2x+5)² = 4x²+25+20x - (4x²+25-20x
=> 20x+20x = 40x
you have applied which identity
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