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Quadratic Formulas~Math Help!?
Please explain how to get the answer.
The solution set of 2xsquared - 8x = 0.
A. {0,4} B. {0,-4} C. {2,4} D. {2,-4}
The solution set of 2xsquared = 6x.
What is the positive root(solution set) of 2xsquared = 72?
The solution set of 2xsquared + 2 = 52 contains 2 members. What's the larger member?
1 Answer
- 1 decade agoFavorite Answer
Solution:
1) 2x^2 - 8x = 0
Take out the common x using the distributive property.
x(2x - 8 ) = 0
x = 0 and x = 4
So A is the correct answer.
2) 2x^2 - 6x = 0
x(2x - 6) = 0 [Distributive Property]
x = 0 and x = 3
3) 2x^2 = 72
x^2 = 36 [Divide both the sides by 2]
x = + or -6
4) 2x^2 + 2 = 52
2x^2 = 50
x^2 = 25
x = + or- 5
5 is greater than -5.
So 5 is the larger number.
