Question

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Simplify (3-5b-4c)²
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Answer 1

Answer:

=> (3)^2 + (-5b)^2 + (-4c)^2 + 2[(3) (-5b)+ (-5b)(-4c) + (-4b)(3) ]

=> 9+25b^2+16c^2 + 2[-15b +20bc -12b]

=> 9+25b^2 +16c^2 - 30b + 40bc -24b. (Ans)

Step-by-step explanation:

Hope it helps..