Answer:
20-3(7)-4(3)
20-21-12
-13
Step-by-step explanation:
x²+2x-3=0
(x²+3x)-(x-3)=0
x(x+3)-1(x+3)=0
(x-1)(x+3)=0
x=1 or x=-3
Answer: From what I understand you want me to do 7*(-15)??? and the answer to that is -105.
Step-by-step explanation: All you have to do is 7*-15
8x-4=-32 so thats an equation that you can use