3u2-1
5 times 2 square equals 20 minus 29 equals -9
That won't factor neatly, so we apply the quadratic formula. x = -8 plus or minus 2 times the square root of 5 x = -3.5278640450004204 x = -12.47213595499958
You have to put your heart into it!
18
3u2-1
5 times 2 square equals 20 minus 29 equals -9
That won't factor neatly, so we apply the quadratic formula. x = -8 plus or minus 2 times the square root of 5 x = -3.5278640450004204 x = -12.47213595499958
7a=2(-10)........................................answer is 20/7
You have to put your heart into it!
18
√(6x) - 3 - 3√x = 1 √(6x) -3√x = 4 √x = 4/(√6 - 3) = -4(√6 + 3)/3 = 16/9*(15+6√6) = 16/3*(5+2√6) = 52.8, approx.
Positive (Plus) times Negative (Minus) always equals a negative (minus).
Simple math rules state that a negative times a negative equals a positive!
Negative times positive equals negative.
The square root of minus 8 is equal to the square root of 8 times the square root of minus 1, or 2.8284i.
x2=-81take the square root of both sidessince 81 is negative you need to take 81 times i when i=-1 then solve as the square root of 81. your answer is x=9i