Answer:
x=-1
Step-by-step explanation:
-12=-12(x+12)
multiply -12 and x which equals -12x
multiply -12 and 2 which equals -24
the resulting equation is -12=-12x-24
add 24 on both sides of the equation----> equals -12x=12
divide -12 on both sides of equation
x=-1
Answer:
x² + 4x + 20 = 12x - 5
x² + 4x - 12x + 20 + 5 = 0
x² - 8x + 25 = 0
Δ = √b² - 4ac
= √(-8)² - 4×1×25
= √64-100
= √(-36)
x ∉ R
B=3d and b=d+4
Since b=b we can say:
3d=d+4 subtract d from both sides
2d=4 divide both sides by 2
d=2
Daniel is 2 years old. (and Ben is 6 years old)
Answer:
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Step-by-step explanation:
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Answer:
Yes it is all correct
Step-by-step explanation:
Good job!!