Solve the Linear Quadratic system of equations y=x^(2)+2x-9 y=-2x+3
1 answer:
9514 1404 393
Answer:
(x, y) = (-6, 15) and (2, -1)
Step-by-step explanation:
You can start by subtracting the second equation from the first.
(y) -(y) = (x^2 +2x -9) -(-2x +3)
0 = x^2 +4x -12 . . . . . . collect terms
0 = (x +6)(x -2) . . . . . . . factor
Solutions for x are -6 and +2. These values make the factors zero.
The corresponding solutions for y are ...
y = -2(-6) +3 = 15
y = -2(2) +3 = -1
Solutions to the system of equations are ...
(x, y) = (-6, 15) and (2, -1)
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Answer:
42
Step-by-step explanation:
Solving the square root by factorization:
1764 = 2² × 3² × 7²
will be
= 2 × 3 × 7 =42