This is Josh’s work and solution for the equation x^2-6x-7=0:
x^2-6x-7=0
x^2-6x=7
...
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Mathematics, 22.03.2020 22:20 cheyennecarrillo14
This is Josh’s work and solution for the equation x^2-6x-7=0:
x^2-6x-7=0
x^2-6x=7
x^2-6x+9=7+9
(x-3)^2=16
√(x-3)^2 =±√16
x-3=± 4
x=-3±4
x=-3+4 x=-3-4
x=1 x=-7
Is Josh’s solution correct? Explain.
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