MATHS QUESTIONS AND ANSWERS

 In math questions answers each question is solved with an explanation:

A. Which number is greater than 4?

(a) 5

(b) -51

(c) -9

(d) -20

The answer is (a)

5 greater than 4.

B.Combine terms:-

 

12a + 26c -4c – 16a

(a) 4a + 22c

(b) -28a + 30c

(c) -4a + 22c

(d) 28a + 30c

Solve:

12a + 26c -4c – 16a

= 12a – 16a + 26c – 4c

= -4a + 22c

The answer is (c)


C. 11+3*5

(a). 23

(b). 39

(c). 26

(d). 70

Solve:

11+3*5

=11+15

=26

The answer is (c)

D. |-26|, which is right from below?

(a) -26

(b) 26

(c) 0

(d) 1


Solve:

|-26|

= 26.

The answer is (b)

E. Simplify:(4x² - 2x) - (-5x² - 8x).

Solve:

(4x² - 2x) - (-5x² - 8x)

= 4x² - 2x + 5x² + 8x

= 4x² + 5x² - 2x + 8x

= 9x² + 6x

= 3x(3x + 2)

The Answer is 3x(3x + 2)

F. 16w³ – u⁴w³

Solve:

16w³ – u⁴w³

= w³(16 – u⁴)

= w^3{4² - ((u²)^2}

= w³(4 + u²)(4 - u²)

= w³(4 + u²)(2² - u²)

= w³(4 + u²)(2 + u)(2 - u)

The answer is

 w³(4 + u²)(2 + u)(2 - u)