given equation 5x^2 -2x+3=0; a-b=?
Answers
Step by step solution :
STEP
1
:
Equation at the end of step 1
5x2 - 3 = 0
STEP
2
:
Trying to factor as a Difference of Squares:
2.1 Factoring: 5x2-3
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expressionCheck : 5 is not a square !!
Ruling : Binomial can not be factored as the
difference of two perfect squares
Equation at the end of step
2
:
5x2 - 3 = 0
STEP
3
:
Solving a Single Variable Equation:
3.1 Solve : 5x2-3 = 0
Add 3 to both sides of the equation :
5x2 = 3
Divide both sides of the equation by 5:
x2 = 3/5 = 0.600
When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:
x = ± √ 3/5
The equation has two real solutions
These solutions are x = ±√ 0.600 = ± 0.77460
Two solutions were found :
x = ±√ 0.600 = ± 0.77460
Answer:
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