Sydney was asked whether the following equation is an identity: (2x^2-18)(x+3)(x-3)=2x^4-36x^2+162 Question Sydney was asked whether the following equation is an identity: (2x^2-18)(x+3)(x-3)=2x^4-36x^2+162 in progress 0 Math Iris 1 week 2021-09-13T09:35:55+00:00 2021-09-13T09:35:55+00:00 2 Answers 0

## Answers ( )

Answer:Yes it is.See below.Step-by-step explanation:(2x^2-18)(x+3)(x-3)= (2x^2 – 18(x^2 – 9)

= 2x^4 – 18x^2 – 18x^2 + 162

=

2x^4 – 36x^2 + 162.The left side transforms to the right side so it is an identity.

Answer:Any value of x x makes the equation true. All real numbers Interval Notation: ( − ∞ , ∞ )

.