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4 years ago

B) What should be subtracted from -7mn + 2m² + 3n² to getm²+ 2mn + n²?please help

Mathematics

1 answer:

Hitman42 [59]4 years ago

6 0

Answer: m²-9mn+2n²

Step-by-step explanation: make use of BODMAS strategy. Let the unknown be x.

-7mn+2m²+3n²-x= m²+2mn+n². Since we are concerned about getting the unknown,let's try to collect the like terms.

-7mn+2m²+3n²-(m²+2mn+n²)= x

-7mn+2m²+3n²-m²-2mn-n²= x

-7mn-2mn+2m²-m²+3n²-n²=x

-9mn+m²+2mn= x

X= m²-9mn+2n²

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B) What should be subtracted from -7mn + 2m² + 3n² to getm²+ 2mn + n²?please help​

B) What should be subtracted from -7mn + 2m² + 3n² to getm²+ 2mn + n²?please help