Question

10. Which is not equal to -5p3 - p?
(a) - (5p3 + p)
(c) (3p3 - 5p) - (-8p - 2p3)
(b) (2p3 + 7p) - (7p3 + 8p)
(d) (4p3 - 8p2 + 7p) - (9p3 – 8p2 + 8p)​

Answer 1

Answer:

c option. hope it will help you.

Answer 2

a) - (5p³ + p)

= -5p³-p

(b) (3p3 - 5p) - (-8p - 2p3)

= 3p³ - 5p+8p +2p³

= 5p³+3p

It is not equal to -5p³-p

(c) (2p3 + 7p) - (7p3 + 8p)

= 2p³ + 7p- 7p³ -8p

= -5p³-p

(d) (4p3 - 8p2 + 7p) - (9p3 – 8p2 + 8p)

=4p³ - 8p² + 7p - 9p³+8p² - 8p

= -5p³-p