Can someone help me with number 7 the circled one?

Mathematics

1 answer:

Ivenika [448]2 years ago

5 0

Your answer:
Equation:
x(x+1) = 2(x+1)+77
-----

x^2+x = 2x+79
x^2-x-79 = 0
------
This quadratic does not have an integer solution.

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