pls answer these....
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j)
5t^2=12t
5t=12
t=12/5
_________________
k)
y^2-81=0
y^2=81
y=9
___________________
L)
10/x=x+3
10=x^2+3x
x^2+3x-10
x^2+5x-2x-10
x(x+5)-2(x+5)
(x-2)(x+5)
____________________
M)
12-2(5-y)=5y
12-10+2y=5y
2=3y
y=2/3
____________________
N)
7x^2-63=0
x^2=63/7
x^2=9
x=3
5t^2=12t
5t=12
t=12/5
_________________
k)
y^2-81=0
y^2=81
y=9
___________________
L)
10/x=x+3
10=x^2+3x
x^2+3x-10
x^2+5x-2x-10
x(x+5)-2(x+5)
(x-2)(x+5)
____________________
M)
12-2(5-y)=5y
12-10+2y=5y
2=3y
y=2/3
____________________
N)
7x^2-63=0
x^2=63/7
x^2=9
x=3
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