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)
(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:
(a) 4a + 22c
(b) -28a + 30c
(c) -4a + 22c
(d) 28a + 30c
Solve:
12a + 26c -4c – 16a
= 12a – 16a + 26c – 4c
= 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.
(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)
= w3{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)
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