How do you solve 2x²-x=3 by factoring
2 answers:
Answer:
the value of x are -1 and
Step-by-step explanation:
we need to find the factor of 2x²-x=3
subtract both the sides by 3, in above expression
2x²- x - 3 = 3 - 3
2x²- x - 3 = 0
we can write x as -3x + 2x
2x²- 3x +2x - 3 = 0
2x²+ 2x -3x - 3 = 0
take out the common terms,
2x(x+ 1) -3(x +1) = 0
(x+ 1)(2x-3) = 0
If x+ 1 =0
⇒ x = -1
If 2x - 3=0
⇒
Therefore, the value of x are -1 and
You might be interested in
Answer:
y = x - 3
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m =
with (x₁, y₁ ) = (- 22, - 14) and (x₂, y₂ ) = (- 18, - 12)
m = =
=
, thus
y = x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (- 18, - 12) , then
- 12 = - 9 + c ⇒ c = - 12 + 9 = - 3
y = x - 3 ← equation of line