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alina1380 [7]
3 years ago
11

Solve for x.

Mathematics
2 answers:
Svetach [21]3 years ago
7 0

Answer:

Just took the test! here is the answer.

IRISSAK [1]3 years ago
5 0

Answer:

x = (-7 ±√89)/4 . . . . . the inverse of selection 3.)

Step-by-step explanation:

You have a quadratic ax²+bx+c=0 with a=2, b=7, c=-5. The solution is given by the quadratic formula as ...

... x = (-b ±√(b² -4ac))/(2a)

Putting your values into the formula gives ...

... x = (-7 ±√(7²-4(2)(-5)))/(2(2))

... x = (-7 ±√89)/4

_____

<em>Comment on answer choices</em>

For whatever reason, the answer choices appear to be "upside down," with numerator and denominator interchanged. The notation a/b means "a divided by b", which is to say that "b" is the denominator.

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