Answer:
The solutions to the equation are -7 and 4.
Step-by-step explanation:
Step 1: Subtract 18 from both sides.
x²+3x−10−18=18−18
x²+3x−28=0
Step 2: Factor left side of equation.
(x−4)(x+7)=0
Step 3: Set factors equal to 0.
x−4=0 or x+7=0
x=4 or x=−7
