Question

from the sum of 3x2 -5x +2 and -5x2 -8x +6, subtract 4x2 -9x +7.

Answer 1

Answer:First is add both numbers with the same literal coefficient. It's just simple, if it's 2t + 3x then you cannot add both numbers.

So let's add:

(2t + 3t) = (4t + 6t) — 10

5t = 10t — 10

Transpose 10t to the other side. Please mind the sign when transposing coefficient. So we have +10t on the other side then after transposing we will have a -10t. So,

5t — 10t = —10

Subtract,

-5t = —10

Since both have negstive signs uoucan divide it by -5 and if negative divides negative the result will be positive.

[-5t/-5 = —10/—5]

t = 2

Therfore t is equal 2.

Let's check;

2t + 3t = 4t + 6t — 10

Substitute the answer to t

2(2) + 3(2) = 4(2) + 6(2) — 10

4 + 6 = 8 + 12 — 10

10 = 20 — 10

10 = 10

Check ✓

Step-by-step explanation: