Subtract

(3x^4+7x^3-9) - (5x^2-8x+4) =

3x^4 + 7x^3 - 5x^2 + 8x - 13

Step-by-step explanation:

(3x^4 + 7x^3 - 9) - (5x^2 - 8x + 4) =

The negative sign to the left of the second set of parentheses changes every sign inside the parentheses.

The first set of parentheses is unnecessary, so we just drop it.

= 3x^4 + 7x^3 - 9 - 5x^2 + 8x - 4

Now we combine like terms.

= 3x^4 + 7x^3 - 5x^2 + 8x - 13

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1