B). It looks as though they factored it.
Answer:
(0,-2) and (3,0)
Step-by-step explanation:
2a2+9ab+(-7b2)
let me know if you need a explanation
Answer: x = 64
Step-by-step explanation:
70 = 1/2((5x+10)-(3x-2)
(remove the inner bracket)
70 = 1/2(5x+10-3x+2)
(transfer 1/2 to LHS)
70*2 = 2x + 12
140 = 2x+12
(transfer 12 to LHS)
140 - 12 = 2x
128 = 2x
(transfer 2 to LHS)
128/2 = x
=>x = 64
hope it helps
Answer:(4,1)
Step-by-step explanation:
-x+3y=-1
X-2y= 2
______
Change second equation move all to right side to leave x on left side .
-x+3y= -1
X= 2y+2
Now substitute second equation that you made into first equation to find y.
-(2y+2)+3y= -1
-2y-2+3y=-1
Y-2=-1
Y= -1+2
Y= 1
Now substitute your answer of y into second equation you created to find x .
X= 2y+2
X= 2(1)+2
X=2+2
X=4
