x2 + 5x + 6 = 0 A. {2, 3} B. {1, –6} C. {–1, 6} D. {–2, –3}
Hey !!! Which two numbers add up to 5 and multiply to 6? 2 and?
3
(x+2) (x+3) = 0
Good so we rewrite the expression as (x+?)(x+?)
Well seems like @Phebe already said it so : When will (x+2)(x+3) equal zero?
with -2 and -3
its when x+2=0 and?
option D
so d!
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Correct b.c its when x+2=0 and x+3=0 And we solve so we subtract 2 and 3 on both sides and get -2,-3
can you help with more?
What value should be added to the expression to create a perfect square? x2 – 10x A. 25 B. –100 C. 5 D. 100
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