Question

Simplify (3x^2 + 5xy –7y^2) + (11x^2– 6xy + 2y^2

) – ( x^2

– 2xy – 3x^2)​

Answer 1

Answer:

16x^2-3xy-5y^2

Step-by-step explanation:

(3x^2 + 5xy –7y^2) + (11x^2– 6xy + 2y^2 ) – ( x^2 – 2xy – 3x^2)​

$3x^2+5xy-7y^2+11x^2-6xy+2y^2-x^2+2xy-3x^2\\\\= 3x^2+11x^2-x^2+3x^2+5xy-6xy-2xy-7y^2+2y^2\\\\= 14x^2+2x^2-xy-2xy-5y^2\\\\= 16x^2-3xy-5y^2$

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