Question

Five less than twice what negative number squared is 157?

Answer 1

Five less than twice what negative number squared is 157 <- put into an expression
-5 + 2(-x^2) = 157
Now simplify:
-5 + -2x^2 = 157
-2x^2 = 162
-2x^2 - 162 = 0
2x^2 + 162 = 0
x^2 + 81 = 0

Answer 2

Using algebraic equation, the negative number that is squared is: -9.

What is an Algebraic Equation?

An algebraic equation can be used to find an unknown value, by making the unknown value the variable.

Let the negative number that would be squared be represented by the variable, x. Thus, we have -x². Therefore:

2x² - 5 = 157

2x² = 157 + 5

2x² = 162

x² = 162/2

x² = 81

x = √81

x = -9

Learn more about algebraic equations on:

https://brainly.com/question/2164351

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