Question

Add 4x2+3xy-8y2, 2xy – 6x2+7y2 and y2-xy +5x2
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Answer 1

Answer:

=3x2+4xy

Step-by-step explanation:

on re- arranging we get,

(4x2-6x2+5x2)+(3xy+2xy-xy)+(-8y2+7y2+y2)

=3x2+4xy+0y2

Answer 2

Answer: $3x^{2} +4xy$

Step-by-step explanation:

($4x^{2} +3xy-8y^{2}$)+($2xy-6x^{2} +7y^{2}$)+($y^{2}-xy+5x^{2}$)

=(4$x^{2}$-6$x^{2}$+5$x^{2}$)+($-8y^{2}+7y^{2}+y^{2}$)+(3xy+2xy-xy)

=3$x^{2}$+4xy

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