Using suitable identity expand(2a- 5b)^2
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Using suitable identity expand(2a- 5b)^2
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Step-by-step explanation:
( 2a- 5b )^ 2
= ( 2a) ^2 - 2 × ( 2a × 5b ) + ( 5b) ^2
= 4a^2 - 20ab + 25b^2