The mistake is in line 2, the parenthesis means multiplication therefore it has to be 3x
Answer:
x=4
Step-by-step explanation:
√x+12=x
x+12=x2(Square both sides)
x+12=x2
x+12−x2=x2−x2(Subtract x^2 from both sides)
−x2+x+12=0
(−x−3)(x−4)=0(Factor left side of equation)
−x−3=0 or x−4=0(Set factors equal to 0)
x=−3 or x=4
x=−3(Doesn't work in original equation)
x=√x+12
Answer:
The answer is C
Step-by-step explanation:
5 students since one student leave each row which means 3 are left . also there are 2 students in the fifth row so you add 3 by 2 which equal 5
I hope this helps you
2x=b-a
x=b-a/2
