Luis strength trains two times per week. he uses 12-pound weights and performs three sets of eight repetitions. he wants to improve his frequency. what should he do? increase to 10 repetitions. increase to 15-pound weights. increase to four sets. increase to three times per week.

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

answer: a

step-by-step explanation: