Question

help me..... have to send to my teacher at 4:15​

Answer 1

so this is your answer

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Answer 2

Answer:

8.

x²-3²=40

x²=40+9

x=+-7

9.

2x²+x=6

2x²+x-6=0

2x²+4x-3x-6=0

2x(x+2)-3(x+2)=0

x=3/2.....or...x=-2

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hope this helps u...pls mark as brainliest