Which statement is TRUE about 2x^2 - 10 = -10?
A) There are no solutions.
B) There is one solution.
C) There are two solutions.
D) There are three solutions.
2007-06-01 02:39:33 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2x^2 -10 = -10
2x^2 = 0
x = 0
B
Are you sure it isn't 2x^2 - 10X = -10
That would have a different answer.
2007-06-01 02:44:04 · answer #1 · answered by TychaBrahe 7 · 1⤊ 1⤋
2x^2 - 10 = -10--original problem
+ 10 +10--add 10 to both sides to reduce
--------------------
2x^2 = 0
The only way to make the statement true is to multiply the left side by 0, which makes the solution 0 = 0 because x = 0. If x can only be 0, the answer is B, one solution.
2007-06-01 09:49:58 · answer #2 · answered by wolfman28 2 · 0⤊ 0⤋
2x^2 - 10 = -10
2x^2 = 0
x^2 = 0
x = 0
there is one solution and that is x = 0
2007-06-01 11:38:26 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Add 10 to both sides to get
2x² = 0
So x²=0 and x = 0.
That's the only solution.
The answer is B).
2007-06-01 09:42:47 · answer #4 · answered by steiner1745 7 · 1⤊ 1⤋
x=0 is the solution, so wat u think?
Ans is D
2007-06-01 09:47:57 · answer #5 · answered by Anonymous · 0⤊ 1⤋