sqrt (5x - 9) - 1 = x
sqrt(5x - 9) = x + 1
Square both sides:_
5x - 9 = x^2 + 2x + 1
x^2 - 3x + 10 = 0
(x - 5)(x + 2) = 0
x = 5 or -2.
Lets look for for any extraneous solutions:-
x = 5 ; sqrt (5*5-9) - 1 = sqrt16 - 1 = 3 and x = 3 (right hand side of equation)
so x = 5 is a solution
x = -2: sqrt(5*-2 - 9) - 1 = sqrt (-19) - 1 and x = -2 so this is extraneous
Answer:- One solution x = 5
Answer:
he got 3456 crayons.
Step-by-step explanation:
50-10=40 then you would divide 40 by 3 so... it would be 13 banana's.
Answer:
x=6
Step-by-step explanation:
Answer:
x=2 y=-2
Step-by-step explanation:
you can solve this with the elimination process
-10x+6y=-32
-6x+6y=-24
you can multiply the bottom equation by a -1
-10x+6y=-32
-1(-6x+6y=-24)
making it
-10x+6y=-32
6x-6y=24
this allows you to cancel out 6y because 6y-6y=0
so you are left with
-10x=-32
6x=24
add them
-10x=-32
+6x=24
________
-4x=-8
divide by -4=2
x=2
plug that into the original equation
-10(2)+6y=-32
-6(2)+6y=-24
=
-20+6y=-32
-12+6y=-24
add them
-20+6y=-32
+-12+6y=-24
_________
-32+6y=-56
add 32
-56+32=-24
y=-24
