Algebra Flashcards
1
Q
a + a
A
2a
2
Q
a x a
A
a²
3
Q
2a + 4a
A
6a
4
Q
3a x 8a
A
24a²
5
Q
2(a + 4)
A
2a + 8
6
Q
2a(5a - b)
A
10a² -2ab
7
Q
a⁰
A
1
8
Q
Factorise 5x² + 10x
A
5x(x + 2)
9
Q
Make b the subject:
a = 2b - 6
A
b = (a + 6) / 2
10
Q
Solve
4a + 1 = 21
A
a = 5
11
Q
When a = 4, b = -3
Find
ab²
A
36
Remember BIDMAS - square -3 first. Then multiply by 4
12
Q
What is the next 3 numbers in the sequence?
-3, 1, 5, 9, ….
A
13, 17, 21
13
Q
Find the nth term for the sequence
2, 7, 12, 17, 22,…
A
5n - 3
14
Q
What is the 150th term in the sequence 2n + 1?
A
Substitute n = 150
2 x 150 + 1 = 301
