express in simplest form

Mathematics
Tutor: None Selected Time limit: 1 Day

(5a^2-3a+8)+(-4a^2-1)+(15a+11)

May 4th, 2015

group the like terms together

5a^2-4a^2+8-1+11-3a+15a

=a^2+12a+18

=a(a+12)+18......................answer


May 4th, 2015

yes

May 4th, 2015

can u help me solve for x: 5x+7=2X-2?

May 4th, 2015

yes i will help you

May 4th, 2015

ty

May 4th, 2015

how do I do it


May 4th, 2015

let mi show you

May 4th, 2015

ok

May 4th, 2015

group the like terms together

5x-2x=-2-7 the sign changes you cross the equal sign

3x=-9 divide both sides by 3

x=-3......................answer


May 4th, 2015

ok ty

May 4th, 2015

sorry for bothering can u help me with 1 more problem?

May 4th, 2015

let me see it

May 4th, 2015

3(x+5)+x=7 solve for x


May 4th, 2015

yes i will help

May 4th, 2015

ty

May 4th, 2015

open the brackets first.

3x+15+x=7

group like terms together

3x+x=7-15

4x=-8

divide by 4 both sides

x=-2........................answer


May 4th, 2015

oo tyy

May 4th, 2015

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