To solve this expression for x:
(2x - 3) / (√x + 2) = √x
We'll first multiply both sides by the denominator on the left:
2x - 3 = x + 2√x
Then subtract x from both sides:
x - 3 = 2√x
Move all terms to the same side:
x - 2√x - 3 = 0
Now we can factor the expression, realizing that x is the square of √x:
(√x - 3)(√x + 1) = 0
Giving us our answers:
x ∈ {9, 1}
It has to be a stupid answer anyway
simply see what you can multiply twice to get the number under the square root sign.
407 square feet divided by 9 square feet per square yard equals 45.22222222 square yards, or just under 45 and 1/4.
The radicand which is the name for the number that you are trying to solve the square root of.
When b is zero.
It has to be a stupid answer anyway
simply see what you can multiply twice to get the number under the square root sign.
407 square feet divided by 9 square feet per square yard equals 45.22222222 square yards, or just under 45 and 1/4.
The radicand which is the name for the number that you are trying to solve the square root of.
The minus key ( - ) and the Under score key ( _ ) if that's what you meanthope i helped Tenile
When b is zero.
First you put -6 under 6 so they cancel each other out. The do 7 - 6 which equals 1. So x equals 1
One easy way to solve this would be to use the quadratic formula, x=(-b+/-sqrt(b^2-4*a*c))/2a. In this case, the formula is x=(-5+/-sqrt(25-4*3*8))/6. In this case, however, the number under the square root is negative, and so the equation has no real solutions.Improved Answer:-3x2+5x-8 = 0(3x+8)(x-1) = 0x = -8/3 or x = 1
A plus with a minus under it means "plus or minus" in math.
No. For example, the square root of two plus (minus the square root of two) = 0, which is not an irrational number.
Since you can't take the square root of a negative number, the expression under the square root must be equal to, or greater than, zero. Just solve this inequality, with the expression under the square root.If I understand correctly, the expression under the root is 9x2-4. For the inequality, get the critical points through an equation first: 9x2-4 = 0; 9x2 = 4; x2 = 4/9; x = plus-or-minus 2/3. Analyzing any points to the left of -2/3, between -2/3 and 2/3, and to the right of 2/3, you quickly see that the inequality is fulfilled for any number that is either = 2/3.
x=square root (-2) =i(square root of 2)WHERE i2 =-1