Which of the following quadtratic equations may be solved more appropriately by factoring?
A. 2x² = 49
B. w² - 64 = 0
C. r² + 12r + 36 = 0
D. 2x² + 8x - 10 = 0
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Which of the following quadtratic equations may be solved more appropriately by factoring?
A. 2x² = 49
B. w² - 64 = 0
C. r² + 12r + 36 = 0
D. 2x² + 8x - 10 = 0
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Answer:
C. r²+12r+36
The factors are
(r+6)(r+6)
r= -6 | r= -6
A. can be solved by Quadratic Formula
B. can be solved by Extracting the Square Root
D. multiply 2 & -10
x²+8x-20
(x+10)(x-2)
(x+10/2)(x-2/2) divided by 2
(x+5)(x-1)
x= -5 x= 1
that type of Computing so, its C