factorize 13x^2 + 24x -193
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here the ques is a bit wrong it should b 13x^2 + 24x -4 ....now i am solving according to 13x^2 + 24x -4
if u r in cls 10 follow this else look down i hv done it in 2 methods
cls 10 method :::
let f(x) = 13x²+24x-4
let x = -2
now, f(-2 ) = 52-48-4 = 0
°•°x = -2 •°• x +2 = 0
now, x+2) 13x²+24x-4( 13x -2
+13x²+26x
(-) (-)
- 2x - 4
-2x - 4
(+) (+)
0.
•°• 13x²+24x-4 = (x+2)(13x-2) .....
lower cls method :::
13x²+24x-4 = 13x² + 26x- 2x -2
= 13x(x+2) - 2(x+2)
= (13x-2)(x+2)
hope i am of some help ...
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