Saturday

January 31, 2015

January 31, 2015

Posted by **Frank** on Wednesday, November 17, 2010 at 8:57pm.

- Algebra -
**bobpursley**, Wednesday, November 17, 2010 at 8:59pmThey have the same y, and x.

set them equal

2x^2-5x-12=1/2 x^2-3x+4

combine terms, solve for x (both values), then compute y for each x.

- Algebra -
**Frank**, Wednesday, November 17, 2010 at 9:03pmwhen i combine the like terms i dont know what the next step is

- Algebra -
**Reiny**, Wednesday, November 17, 2010 at 9:04pmset y = y

2x^2 - 5x - 12 = (1/2)x^2 - 3x + 4

I don't like fractions, so multiply each term by 2

4x^2 - 10x - 24 = x^2 - 6x + 8

3x^2 -4x - 32 = 0

(x - 4)(3x + 8) = 0

x = 4 or x = -8/3

if x = 4, y = 32 - 20 - 12 = 0

if x = -8/3

y = 128/9 +40/3 - 12 = 140/9

I could have subbed into the other equation to obtain the same y values, since we set them equal

two points are(4,0) and (-8/3, 140/9)

**Answer this Question**

**Related Questions**

Math - The graphs of y= x^2 - 8x - 35 and y= -2(x^2) + 16x +3 intersect in two ...

Math/Algebra - The graphs of y=3-x^2+x^3 and y=1+x^2+x^3 intersect in multiple ...

Algebra - What are the coordinates of the points where the graphs of f(x)=x^3-x...

calculus - Consider the graphs of y = 3x + c and y^2 = 6x, where c is a real ...

TRIG - Sketch the graphs of y=cos 2x and y= -0.5 over the domain -pi<x<pi...

math - georgia is constructing a line perpendicular to xz at point x.with x as a...

Algebra 1--Please, check my answer! - At how many points does the graph of y = (...

MATH - two circles whose equations are (x-3)^2+(y-5)^2=25 and (x-7)^2+(y-5)^2=9 ...

Geometry - Plese show how it is possible for two triangles to intersect in one ...

geometry - Alex plots 4 points K, L, M, and N. He joins points K and L and ...