Question

The value of x3+x2-x=10.if
a) x=1
b) x=2
c) x=3
d) x=4

​

Answer 1

Answer:

x³ + x² - x = 10

a) if x is 1

(1)³ + (1)² - 1 = 10

1 + 1 -1 = 10

1 ≠ 10

b) if x is 2

(2)³ + (2)² - 2 = 10

8 + 4 - 2 = 10

10 = 10

c) if x is 3

(3)³ + (3)² - 3 = 10

27 + 9 -3 = 10

33 ≠ 10

d) if x is 4

(4)³ + (4)² - 4 = 10

64 + 16 - 4 = 10

76 ≠ 10

=> the value of x³ + x² - x = 10 if (b) x = 2