Question

1.the square og 2 is the same as two times the difference of g and 10.

2. the product of 3 and the square of g equals the sum of thirty and the product of nine and g.

i really need help on this i don't get it.

thanks

Answer 1

1.
I assume this translates to "the square of g"

Given that, you have to realize that the difference between g and 10 is just g-10. So, we are left with:

g^2 = 2(g-10)
g^2 - 2g + 20 = 0
Hmmm. No solutions here

g^2 = 2(10-g)
g^2 + 2g - 20 = 0
g = -2 +/- sqrt(21)

2.
3g^2 = 30 + 9*g
3g^2 - 9g - 30 = 0
g^2 - 3g - 10 = 0
(g-10)(g+1) = 0
g = 10 or -1