A few days ago
math homework help plz!?
we are doing some review and i kind of forgot how to do them…
State whether these are true or false and explain why:
1) (x-4) over (y-3) = (4-x) over (3-y)
2) Square root of (x³+7x²) = x times square root of (x+7)
thanks
Top 3 Answers
A few days ago
Favorite Answer
1) True.
Multiply the top an bottom by -1 (Remember that -1/-1 = 1, so this doesn’t change the problem).
2) False.
sqrt(x^3 +7x^2)
= sqrt[x^2(x+7)]
= sqrt(x^2) * sqrt(x+7)
= |x| * sqrt(x+7)
0
A few days ago
relax dude…..he got it right why dont u substitue a number for x and y and see for urself lrts say x=2 and y=5
we get for the first one -2/2 i.e -1
for second one 2/-2 its again -1
hence proved
0
A few days ago
well i guess u got the answer
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