Simplification Test 2

Question : 4 of 40

Marks: +1, -0

If (a + b + 2c + 3d) (a – b – 2c + 3d) = (a – b + 2c – 3d) (a + b – 2c – 3d); then 2bc is equal to:

Solution:

Here,

{a+b+2c+3d}/{a+b-2c-3d}

={a-b+2c-3d}/{a-b-2c+3d }

⇒{2(a+b)}/{2(2c+3d)}={2(a-b)}/{2(2c-3d)}

⇒{a+b}/{a-b}={2c+3d}/{2c-3d}

⇒{2a}/{2b}={4c}/{6d}

∴2bc=3ad

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