Help
Contact
For teachers and institutes
Search courses, problems, tests…
A
A
>_
StemPy Lab
Courses ▾
Problems ▾
Practice ▾
Mock Tests
Classes
Groups
Community ▾
A
A
Expand (2x + 5)². | StemPy Lab
Quizzes
/
Expand (2x + 5)².
Mathematics
Medium
High School (9–10)
General
Algebra › Algebraic Identities and Factorisation
Created by
StemPy Lab
Expand
(
2
x
+
5
)
2
(2x + 5)^2
(
2
x
+
5
)
2
.
4
x
2
+
25
4x^2 + 25
4
x
2
+
25
4
x
2
+
20
x
+
25
4x^2 + 20x + 25
4
x
2
+
20
x
+
25
2
x
2
+
20
x
+
25
2x^2 + 20x + 25
2
x
2
+
20
x
+
25
4
x
2
+
10
x
+
25
4x^2 + 10x + 25
4
x
2
+
10
x
+
25
Check Answer
Log in to save
Tag someone
⚑ Report
← All Quizzes
← x³ - x factorises as x(x - 1)(x + 1). Which number below does NOT make it zero?
a + b = 7 and ab = 10. What is a² + b²? →
More on
Algebra › Algebraic Identities and Factorisation
Discussion (0)
Log in
to join the discussion.
Loading…
Show that if x + y + z = 0, then x³ + y³ + z³ = 3xyz. Use it to find 9³ + (-4)³ + (-5)³.
Hard
Factorise 27x³ + 64y³.
Medium
Expand (3x + 2y)² and (x - 3y)³.
Medium
Use an identity to find each value. 107 × 93; 95²; 101³
Easy
All problems on this topic →