Question

IfA=a2+3b2−4ab, B=−2a2−b2+ab, and C=a2−2ab+b2, thenA+B−C= 1] 2b2+5ab• 2] 0a2+3b2−5ab 3]−2a2+b2−ab • 4] −2a2+3b2−5ab which option

Answer 1

Answer:

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