Question

check wheather (x-2) is a factor of x cube - 2xsqare-5x+ 4​

Answer 1

Step-by-step explanation:

put x=2 in equation;

then. 2³-2.2²-5.2+4=8-8-10+4=-6

Answer 2

$\huge\underline\mathfrak\purple{ANSWER : }$

Given polynomial,

p(x) = x³ - 2x² - 5x + 4 = 0

(x - 2) is a factor of the polynomial. So,

↪ x - 2 = 0

↪x = 0 + 2

↪ x = 2

Substitute x in the polynomial.

➡ (2)³ - 2(2)² - 5(2) + 4

➡ 8 - 2(4) - 10 + 4

➡ 8 - 8 - 10 + 4

➡ -6

∴ (x - 2) is not a factor of the given polynomial

Step-by-step explanation:

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