By actual division ,find the quotient and remainder.When 3x⁴-4x³-3x²-2x-1 by x+1
Answers
Answer:
quotient=3x^3-7x^2+4x-6
remainder=5
Step-by-step explanation:
(3x⁴-4x³-3x²-2x-1)÷(x+1)
quotient=3x^3-7x^2+4x-6
remainder=5
x + 1)3x⁴ - 4x³ - 3x² -2x-1( 3x³ - 7x² + 4x - 6
(-) 3x⁴ + 3x³
- 7x³ - 3x²
(-) - 7x³ - 7x²
4x² - 2x
(-) 4x² + 4x
- 6x - 1
(-) - 6x - 6
5
Quotient = 3x³ - 7x² + 4x - 6
Remainder = 5
Verification:
Dividend = Divisor×Quotient+Remainder
(3x⁴ - 4x³ - 3x² - 2x - 1)
= (x + 1) × (3x³ - 7x² + 4x - 6) + 5
= x(3x³ - 7x² +4x - 6)+ 1(3x³- 7x²+4x - 6) + 5
= 3x⁴- 7x³ + 4x² - 6x + 3x³-7x² + 4x - 6 + 5 = (3x⁴ - 4x³ - 3x² - 2x - 1)
LHS = RHS
Hence Proved