This question is called "signs of expressions challenge" me

Zero.

Step-by-step explanation:

Anything times zero is zero.

Since you have something, as in , times 0, then the result is 0 regardless of the value of the something part I mentioned.

Needless work.

See that c=-2 and d=2.

So 5c=5(-2)=-10 and

Plugging them in gives:

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

2nd one in the first row is correct