Torksheet 1
Find the following by using Identity-I.
(i) (2x + 5)2
(8)
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Step-by-step explanation:
(2x+5)²
=(2x)²+5²+2(2x)×5. { (a+b)²=a²+b²+2ab}
=4x²+25+20x
=4x²+20x+25.
hope you got it
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