What the trinomial factor of this problem

Step-by-step explanation:

Factoring a Trinomial

A second-degree trinomial can be expressed as:

It can be factored, i.e., converted to a product instead of a sum of terms in several ways.

We'll use the grouping method.

Factor:

Split the second term into two terms:

Factor x on the first two terms and -5 on the last two terms:

Now factor out x-4:

Thus:

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.