Question

Solve and check: 3 x2 + 5x + 6 + x − 1 x + 2 = 7 x + 3

Answer 1

3
`x^(2)` -2x +5=0

Explanation:

Combine liked terms:

3
`x^(2)`+5x+x-1x+6+2=7x+3

3
`x^(2)`+6x-1x+8=7x+3

3
`x^(2)`+5x+8=7x+3

Subtract 3: 3
`x^(2)`+5x+8-3=7x+3-3

3
`x^(2)`+5x+5=7x

Now subtract 7x:

3
`x^(2)`+5x+5-7x=7x-7x

If you want combine liked terms:

3
`x^(2)`-7x+5x+5=0

3
`x^(2)`-2x+5=0

Hope this helps!