what should we added to -mn²+2mn-n²to get 4mn+m²+n²m
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Answer:
2mn + m² + n²m + mn² + n²
Step-by-step explanation:
let the no be = x
4mn + m² + n²m + x = -mn² + 2mn - n²
∴ x = 4mn + m² + n²m - ( -mn² +2mn - n²)
4mn + m² + n²m + mn² - 2mn + n² (remove the brackets)
2mn + m² + n²m + mn² + n² ( 4mn and -2mn are like terms)
∴ 2mn + m² + n²m + mn² + n² should be added to -mn²+ 2mn -n² to get 4mn +m²+ n²m
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