Question

Solve by factoring.

3x2−30x=−75

Answer 1

please help someone

Answer 2

first, move sides -75 to LHS, be
3x^2−30x+75=0

Answer 3

shouldnt i divide by 3 first to make the fraction problemeasier to work with: x2-10x+25=0

Answer 4

?

Answer 5

divide each term by 3

x^2 - 10x + 25 = 0

looks like a perfect square

Answer 6

@campbell_st thats what i got but then i get stuck because its te;;ing me my answers are wrong

Answer 7

ll*

Answer 8

x=5

PROOF:

3x^2-30x=-75
transpose 75 to the other side of the equation makes the equation
3x^2-30x+75
divide the equation by 3 makes it
x^2 - 30x+25=0
factor the equation
(x-5)^2
therefore x=5
checking:
3(5^2)-30(5)=-75
3(25)-150=-75
75-150=-75
-75=-75
therefore, 5 satisfies the equation

Answer 9

x^2 - 10x + 25 = 0
(x-5)(x-5) = 0

Answer 10

ohhh ok i see:)