Step-by-step explanation:
x⁴+3x³-4x²=0
x²(x²+3x-4)=0
x²+3x-4=0
x²+4x-x-4=0
x(x+4)-1(x+4)=0
(x+4)(x-1)=0
x=-4 or 1
x can't be negative
therefore x=1
x+4=1+4=5
Answer:
Step-by-step explanation:
We are given the two functions:
And we want to find:
So, by substitution, we acquire:
Distribute:
Simplify:
$1.80
3.99 x 0.04 = 1.79
and you get 1.80 when you round it
Answer:
x=-1
Step-by-step explanation:
-3x+8=11
subtract 8 from both sides
-3x=3
divide by -3 on both sides
x=-1
Answer:
here is the answer hope you understood it!
Step-by-step explanation: