3 years ago

Find the exact solution of 5- 2x^2 = -15

1 answer:

6 0

Step 1: Simplify both sides of the equation.
−2x^2 + 5= 15

Step 2 : Subtract 5 from both sides
-2x^2 + 5 - 5 = -15 - 5
-2x^2 = -20

Step 3: Divide both sides by -2.
-2x^2 -20
———- = ———-
-2 -2

X^2 = 10

The answer is :
x=±√
10

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