Question

if A=3x square-7x+8,B=x square+8x-3 and C=5x square -3x+2,find the value of B-C-A

Answer 1

Hi,

It is given that ,

A = 3x² - 7x + 8 ,

B = x² + 8x - 3 ,

C = 5x² - 3x + 2 ;

B - C - A

= ( x² + 8x - 3 ) - ( 5x² - 3x + 2 ) - ( 3x² - 7x + 8 )

= x² + 8x - 3 - 5x² + 3x - 2 - 3x² + 7x - 8

= ( 1 - 5 - 3 )x² + ( 8 + 3 + 7 )x - 3 - 2 - 8

= -7x² + 18x - 13

I hope this helps you.

: )

Answer 2

A=3x^2-7x+8
B=x^2+8x-3
C=5x^2-3x+2

B-C-A
=x^2+8x-3-5x^2+3x-2-3x^2+7x-8
= -7x^2+18x-13
hope this helps ...