Question

Verify that (3x + 5y)2 – 30xy = 9x2 + 25y2​

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

L.H.S = (3x + 5y)2 – 30xy

= (3x)2 + 2 × 3x × 5y + (5y)2 – 30xy [Since (a + b)2 = a2 + 2ab + b2]

= 9x2 + 30xy + 25y2 – 30xy

= 9x2 + 25y2 = R.H.S

HENCE VERIFIED ...