simplify with identity and show full steps
(2x+7y)(4x^2-14xy+49y^2)
Answers
Answered by
1
L.H.S
(2x−7y)
2
+28xy
=4x
2
+49y
2
−2×2×7xy+28xy [∵(a−b)
2
=a
2
+b
2
−2ab]
=4x
2
+49y
2
−28xy+28xy
=4x
2
+49y
2
=R.H.S
Hence proved.
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