Answer:
Step-by-step explanation:
x²+6x = 18
coefficient of the x term: 6
divide it in half: 3
square it: 3²
add 3² to both sides to complete the square and keep the equation balanced:
x²+6x+3² = 18+3²
(x+3)² = 27
x+3 = ±√27 = ±3√3
x = -3±3√3
Answer:
70%
tell me if its wrong but this is what i got
Rewrite Equations
x=10; y=−5x+30
Step: Solve x=10
for x: x=10
Step: Substitute
10 for x in y=−5x+30:
y=−5x+30
y=(−5)(10)+30
y=−20
(Simplify both sides of the equation)
Answer: x=10 y=-20 (10,-20)
Answer:
2x+6
10x-20
8x+1
6x-24y
Step-by-step explanation:
so what you do is multiply the number outside of the bracket by the numbers inside while keeping their repective symbol.
Answer:
1
Hope this helps sorry I'm not really good at explaining math, cause when I do nobody understands.