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Svetach [21]
4 years ago
7

2xsquared - 72= 0 Solve the equation?

Mathematics
2 answers:
34kurt4 years ago
4 0

Answer:

-68

Step-by-step explanation:

Dafna11 [192]4 years ago
3 0

Answer:

x = -6 or x = 6

Step-by-step explanation:

2x^2 - 72 = 0

Divide both sides by 2.

x^2 - 36 = 0

Factor the left side. It is a difference of two squares. The pattern for that is

a^2 - b^2 = (a + b)(a - b). Now we apply that pattern to x^2 - 36 on the left side.

(x + 6)(x - 6) = 0

x + 6 = 0 or x - 6 = 0

x = -6 or x = 6

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Keywords: absolute value function, vertex

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