2x^2+10x-3x-15= 2x^2+7x-15
X=[(x+60°)-20°]/2
x=(x+60°-20°)/2
x=(x+40°)/2
Solving for x: Multiplying both sides of the equation bu 2:
2x=2(x+40°)/2
2x=x+40°
Subtracting x both sides of the equation:
2x-x=x+40°-x
x=40°
Answer: x=40°
6 √5
7 π
Both continue on forever and will never have an exact answer - therefore, they're irrational.
7 = ln(x + 6)
We first use the terms on both sides as exponents for e:
e^7 = e^ln(x + 6)
Since e^ln(a) = a,
e^7 = x + 6
x = e^7 - 6
Approximating using a calculator for e^7 gives us 1090.63.