Question

Find using appropriate property : 143² . 142²​

Answer 1

Simple question dude

Just remember this algebraic identity

${x}^{2} - {y}^{2} = (x - y)(x + y)$

So now lets use it to find the naswer to the given problem

143^2 - 142^2

( 143 - 142 )( 143 + 142 )

1 × 285

285

Hope it helps you

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