The difference (subtraction) of a number (x) squared (²) and the number (x) is (=) one less than (- 1) four times (4 ·) the number (x)
x² - x = 4x - 1
Right away, we know that
which means
Then
Let and . Then
from which we find
You can use the same ideas above to find the trig ratios for , starting from the given fact that .
Answer:
1
Step-by-step explanation:
Answer:The answer is c
Step-by-step explanation:
Multiply both side is the equation by -1.
Sum the equations vertically to eliminate at least one variable
Divide both sides of the equation by 3
Substitute the given value of y into the equation 2x+3y=8
and then solve for x