Mathematics, 24.11.2019 15:31, brokegirlyy

When the solution of x2 + 9x − 9 is expressed as 9 plus or minus the square root of r, all over 2, what is the value of r? x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a

a: 117
b: 54
c: 45
d: 9

Answers: 1

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When the solution of x2 + 9x − 9 is expressed as 9 plus or minus the square root of r, all over 2, w...