Question

x³+ 5x²- 7x + 4÷ x-1 is

a. -1
b. 2
c. 3

please write explanation of answer​

Answer 1

Correct Question :-

Find remainder -

x³+ 5x²- 7x + 4 is divided by x-1

Answer :-

By using remainder theorem

➩ x - 1 = 0

➩ x = 1

Substituting in polynomial -

x³ + 5x²- 7x + 4

= 1³ + 5 × 1²- 7 × 1 + 4

= 1 + 5 - 7 + 4

= 10 - 7

= 3

Remainder = 3

Answer 2

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