I need this for a test: The sum of 3x^2+5x-6 and -x^2+3x+9 is 1) 2x^2+8x-15

2) 2x^2+8x+3

3) 2x^4+8x^2+3

4) 4x^2+2x-15

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3

8(4)^8=72^feet to say that the total can conclude to 8(4) which as you know would mean 8 x 4. that equals 32w. 32^ could make a 72 answer as well. but your coefficent will remain w so your answer is 72w.

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