Question

if A=4x^3-5x+7,B= 2X^3 - X^2 + 3 and C=5x^3-8x^2+10 then A-2B-C IS

Answer 1

The result equation is -5x³+10x²-5x -9

1) Given values of equations are:-

A = 4x³- 5x+7

B = 2x³-x²+3

C= 5x³-8x²+10

2) Now the value we have to find is A-2B-C

3)Value of A is given

Value of 2B would be 2(2x³-x²+3)= 4x³-2x²+6

4) Now substituting in the equation

4x³- 5x+7-(4x³-2x²+6)-(5x³-8x²+10)= (4x³-4x³-5x³) + ( 2x²+ 8x²) + (-5x)+(7-6-10)

5) Hence the resulting equation would be -5x³+10x²-5x -9