write down the square of 2t + 9
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Answer:
= 4t^2 + 36t + 81
Step-by-step explanation:
( 2t + 9 ) ^2
as we know ,
( a + b ) ^ 2 = a^2 + 2ab + b^2
= ( 2t) ^ 2 + 2 x 2t x 9 + ( 9) ^2
= 4t^2 + 36t + 81 ( answer )
hope this will helps u......be happy......
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