Answer: c
Step-by-step explanation:
Answer:
D, 30%
Step-by-step explanation:
you move the decimal point twice to the right
3x2+4x=2
6+4x=2
-6 -6
4x=-4
4 4
x=-1
Step-by-step explanation:
let d+e=2 be equation 1
let d-e=4 be equation 2
lets make d the subject in equa 1
d = 2-e equation 3
put equation 3 in 2
2-e=4
e=2-4
e=-2
put e=-2 in equa 1
d-2=2
d=4
e is -2 and d is 4