Answers LUSD-Int Math 2A LT2 Rational and Irrational Numbers A-G Unit 2 Test — Unit testQuestion 23

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QuizMultiple Choice

Unit 2 Test — Unit test

Question 23 • LUSD-Int Math 2(A) LT2 Rational and Irrational Numbers (A-G)

What is the first step in solving the quadratic equation -5x2+8=133?

Answer

A

taking the square root of both sides of the equation

B

subtracting 8 from both sides of the equation

C

squaring both sides of the equation

D

adding 8 to both sides of the equation

Explanation

First isolate the term containing x by subtracting 8 from both sides: -5x² + 8 - 8 = 133 - 8, so -5x² = 125. Then you can divide by -5 and solve for x². The correct choice is subtracting 8 from both sides of the equation.

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