6.EE.1.2 Represent the expression “A number, x, decreased by the sum of 2x and 5" algebraically. A. (2x + 5) - x B. X - (2x + 5) C. x - 2x + 5 D. (x + 2x) - 5

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

d. is the correct answer

step-by-step explanation:

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

square root

step-by-step explanation: