Question

What must be subtracted from -3m2 + m - 4 to obtain m2 - 6m?​

Answer 1

Answer:

Let q should be subtracted.

Then, according to question,

2a+8b+10−q=−3a+7b+16

⇒−q=−3a+7b+16−(2a+8b+10)

⇒−q=−3a+7b+16−2a−8b−10

⇒−q=−3a−2a+7b−8b+16−10

⇒−q=−5a−b+6

⇒q=−(−5a+b+6)

⇒q=5a+b−6.

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Answer 2

Answer:

2a+8b+10−q=−3a+7b+16

⇒−q=−3a+7b+16−(2a+8b+10)

⇒−q=−3a+7b+16−2a−8b−10

⇒−q=−3a−2a+7b−8b+16−10

⇒−q=−5a−b+6

⇒q=−(−5a+b+6)

⇒q=5a+b−6.