Y = -(x+5)2 + 9 into standard form
1 answer:
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X ² - x - 4 = 0
Exact values are x 1 = 2.56 and x 2 = -1.56
Exact values are x 1 = 2.56 and x 2 = -1.56
Answer:
The solution of this system of equations is (3 , -8)
Step-by-step explanation:
The given system is
x + 2y = -13
12x + 5y = -4
We make x the subject of the first equation and put it into the second:
We put this expression for x into the second equation
12(-13-2y)+5y=-4
-156-24y+5y=-4
-24y+5y=-4+156
-19y=152
y=-8
We substitute y=-8 into x=-13-2y to get:
The solution of this system of equations is (3 , -8)