Question

Help please .................

must show work

Answer 1

Classify the same terms in each question. It will help you to solve it easier.

1- 3x +4x +2 +6 = 7x +8

2- 2x +x +y -y +3z +z = 3x + 4z (we didn't put y because +y -y =0 )

3 -

`{x}^(2) + {x}^(2) + 2 - 5 = 2 {x}^(2) - 3`
4-

`3 {a}^(2) + {a}^(2) + 2a + a - 1 + 1 = 4 {a}^(2) + 3a`

( a and a^2 aren't the same because a's exponent is one , but a^2 's exponent is two.)

5-

`2{x}^(2) + {x}^(2) + 3x - x - 1 + 2 = 3 {x}^(2) + 2x + 1`
6-

`2z - 3z - {z}^(2) + {z}^(2) + 5 + 1 = - z + 6`
7-

`- 2 {t}^(2) + {t}^(2) - t + t + 3 - 3 = - {t}^(2)`
8-

`(4m - 2n) - (3m + 3n) =`
we should distribute (-) to numbers in pharantesis after (-) so we can get the correct result.


`4m - 2n - 3m - 3n`
now we can classify


`4m - 3m - 2n - 3n`
= m-5n

9- (same technique with the previous one)


`6a - 2b - 7 - a + b - 2`

- (a -b+2 ) = -a+b-2

`5a + 3b - 9`

10-


`7 - 3 {q}^(2)`
(-3q^7 +7 is possible too)

11-


`6 {d}^(2) + 3d + 1 - {d}^(2) + 3d + 5 = 5 {d}^(2) + 6d + 6`

Hope it helps!
#MissionExam001