Solve x^2 +4-4=8 for x
x=-6 or x=2
x=-2+/- 2 (square root) 2
x=-2 or x =6
x=2+/-2 (square root)2

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market