Answer:
x=2
Solve for x by simplifying both sides of the equation, then isolating the variable.
25^2-13^2=456
456 square root is 21.354...
21
2) -6
8 is positive and 14 negative. You can either draw a number line and help yourself with that or since the negative one is bigger you can do the subtraction 14 - 8 and then change the sign of the answer.
Note that if we add each side of the 2 equations, y will cancel out:
-12x-y+(17x+y)=6+4
5x=10
x=2
Substituting x=2 in either of the equations, we find the value of y.
Let's use the first equation:
-12x-y=6
-24-y=6
-y=24+6
-y=30, so y=-30.
Thus, the solution is (2, -30)
Answer: C
Answer:
C)x = +/-15
Step-by-step explanation:
15x15=225
-15x-15=225
