Mathematics
anniehammer
32

3.) What are the solutions to x^2 + 8x + 7 = 0? x = –8 and x = –7 x = –7 and x = –1 x = 1 and x = 7 x = 7 and x = 8

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(2) Answers
SecondSon

The answer to this question is -7+-1=-8 -1+-7=8 1+7=8

madisonyraguen

check if x = -8 is the solution 1. substitute number -8 for x in the equation (-8)^2 + 8*(-8) + 7 = 0 2. do calculations on the left size 64 -64 + 7 = 0 7 = 0 3. equality means x is the solution, inequality means it is not -8 is not the solution to x^2 + 8x + 7 = 0 check other given numbers the same way x=-7 (-7)^2 + 8*(-7) + 7 = 0 0=0 -7 is the solution x=-1 (-1)^2 + 8*(-1) + 7 = 0 0=0 -1 is the solution x=1 (1)^2 + 8*(1) + 7 = 0 16=0 1 is not the solution x=7 (7)^2 + 8*(7) + 7 = 0 113=0 7 is not the solution x=8 (8)^2 + 8*(8) + 7 = 0 135=0 8 is not the solution answer: The solutions to given equation are -7 and -1.

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