# ACT Math 1.5 Intermediate Algebra

ACT Math Intermediate Algebra Drill 1, Problem 5. Can you simplify the expression?

 ACT Math Intermediate Algebra ACT Mathematics Intermediate Algebra Algebra FactoringInterpret the structure of expressionsWrite expressions in equivalent forms to solve problems Elementary Algebra Solve quadratic equations by factoring Foreign Language Arabic SubtitledChinese SubtitledKorean SubtitledSpanish Subtitled Intermediate Algebra Fractional equationsRadical and rational expressions Language English Language Product Type ACT Math

### Transcript

00:21

because we have a 7 and a 49 in the same line...49 is 7 squared so... we're just being baited.

00:28

First we need to factor the first part. We have quantity x minus 7 times quantity x plus

00:32

7... then all of that times 7... or we can just put the 7 in front, over here.

00:38

We've got a 7 MINUS x on the bottom -- but we need it to be the other way around, so

00:43

we have to multiply top and bottom by negative 1.

00:45

And we get this ugly equation:

00:47

Which simplifies to negative 7 times the quantity x plus 7... then all over x... and we're good.

00:53