Expand: (a – 9)^2.
Correct answer(s):
- a^2 - 18a + 81
Subject
Mathematics
Practice related MCQ quizzes and improve step by step.
Quizzes in Mathematics
Simplify: a^8 ÷ a^5, where a ≠ 0.
Correct answer(s):
- a^3
A line has slope 1/2 and y-intercept -5. Which equation represents the line?
Correct answer(s):
- y = 1/2x - 5
Find an expression for the nth term of the arithmetic sequence: 8, 10, 12, 14, …
Correct answer(s):
- 2n + 6
Solve the inequality: -5x – 3 < -8.
Correct answer(s):
- x > 1
Evaluate -4x + 4y + 3 when x = -5 and y = -1.
Correct answer(s):
- 19
Expand and simplify: 5(x + 4).
Correct answer(s):
- 5x + 20
A shop charges a fixed delivery fee of 26 taka plus 6 taka for each eraser pack. If the total cost is 80 taka, how many eraser packs were ordered?
Correct answer(s):
- 9
Find x if 7x – 15 equals -29.
Correct answer(s):
- -2
For the expression 1/(n – 4), which value of n is not allowed?
Correct answer(s):
- 4
Which part of the expression 7x – 5 is the coefficient of x?
Correct answer(s):
- 7
A linear rule produces these values: x=6 gives y=20, x=-3 gives y=-7, x=0 gives y=2. Which rule matches the table?
Correct answer(s):
- y = 3x + 2
Select all expressions equivalent to 2x + 8.
Correct answer(s):
- 2(x + 4)
- 2x + 8
The sides of a rectangle are (6x + 2) cm and (4x + 2) cm. Which expression represents its area?
Correct answer(s):
- 24x^2 + 20x + 4
8 years from now, Rina’s father’s age will be 2 times Rina’s age. Rina is now 18. How old is her father now?
Correct answer(s):
- 44
Solve the proportion: 4/4 = 3/x.
Correct answer(s):
- 3
Expand: (x – 4)^2.
Correct answer(s):
- x^2 - 8x + 16
Simplify: p^7 ÷ p^4, where p ≠ 0.
Correct answer(s):
- p^3
A line has slope 1/2 and y-intercept 1. Which equation represents the line?
Correct answer(s):
- y = 1/2x + 1
Find an expression for the nth term of the arithmetic sequence: 6, 10, 14, 18, …
Correct answer(s):
- 4n + 2