The solution set for -2x2 + 12x = 0 is a. (0,12) b. (0,-12) c. (0,6) d. (0,-6)
2 answers:
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Explanation:
When we have variables on both sides we look for the coefficient that is lower than the two and reverse the sign.
Example:
1x+ 4 = 2x+3
We reverse 1x sign because it is lower so we will be subtracting
2x-1x = 1x
1x+3=4
We would then solve for x.
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Let's begin to solve! </span>
Step 1:
You would look for the coefficient or variable that is less and reverse the sign.
In this question the lower number is -x and so we would reverse the sign to add.
x+x= 2
Step 2:
We now have
2x+3 = -5
Step 3:
We will subtract 3 to -5 to find X
-3+-5= -8
Step 4:
2x = -8
Divide both sides by two fo find x
Our answer:
-
Summary:
We first looked for the lower coefficient (in this case variable). We then flipped the sign and solved for x.
When we have variables on both sides we look for the coefficient that is lower than the two and reverse the sign.
Example:
1x+ 4 = 2x+3
We reverse 1x sign because it is lower so we will be subtracting
2x-1x = 1x
1x+3=4
We would then solve for x.
<span>
Let's begin to solve! </span>
Step 1:
You would look for the coefficient or variable that is less and reverse the sign.
In this question the lower number is -x and so we would reverse the sign to add.
x+x= 2
Step 2:
We now have
2x+3 = -5
Step 3:
We will subtract 3 to -5 to find X
-3+-5= -8
Step 4:
2x = -8
Divide both sides by two fo find x
Our answer:
-
Summary:
We first looked for the lower coefficient (in this case variable). We then flipped the sign and solved for x.