Question

8.Add: 8x²-3x +2xy-12 and 13x²-18xy+15​

Answer 1

Step-by-step explanation:

We have, (8x²-3x+2xy-12)+(13x²-18xy+15)

=21x²-3x-16xy+3

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Answer 2

Answer:

2+2=4

Step-by-step explanation:

1+1

=2

1+1 again

=2

then we have 2 and 2 so we substract them

2-2 =0

now we take 2 and 2 again

and add them

and we get 4

because 2+2= 4

so,

hence proved