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Maths Puzzle
Numerical Ability
a^4-15a^2+56
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This problem seems to hace so mny letteres and numbers that I am loosing myelf in the equation. I am having a hard time just figuring out the LCD.
the equation is x/7x+7 + x+8/1
solve using the square property:
please tell me if I solved this problem correctly.
(x+6)^2=121
x+6=sqrt121
x+6=11
x=6+11
x=17
x-6= -sqrt121
x-6= -11
x=6-11
x= -5
x= 17, -5