Answer:
x = -1 or 2
Step-by-step explanation:
Taking the antilog, you have the quadratic ...
x^2 -x -1 = 1
x^2 -x -2 = 0 . . . . subtract 1
(x -2)(x +1) = 0 . . . factor
The values of x that make these factors zero are the solutions to the equation.
x = 2 or x = -1
That line means the other side is also x
remember pythagoran theorem
for legs length a and b and hypootnuse length c
a²+b²=c²
so
legs aer x and x
hyptonuse is 6
x²+x²=6²
2x²=36
divide both sides by 2
x²=18
sqrt both sides
x=(√9)(√2)
x=3√2
Answer:
x2 - 15 = 2x
x2 - 2x -15 = 0
(x - 5)(x + 3) = 0
X-5 = 0 or x + 3 = 0
Potential solutions are -3 and 5
Answer:
d. 3 and 5
Step-by-step explanation:
the first number will be x and the second number will be y
2x + 3y = 21
2(3) + 3(5) = 21
6 + 15 = 21
5x + 3y = 30
5(3) + 3(5) = 30
15 + 15 = 30
