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Expand and simplify (3a - 5b)(3a + 5b)
MATHEMATICS · Single correct · GCSE · Mathematics · Algebra · Algebra
Problem
Expand and simplify
(
3
a
−
5
b
)
(
3
a
+
5
b
)
(3a - 5b)(3a + 5b)
(
3
a
−
5
b
)
(
3
a
+
5
b
)
(1) A:
9
a
−
25
b
9a - 25b
9
a
−
25
b
(2) B:
9
a
+
25
b
9a + 25b
9
a
+
25
b
(3) C:
9
a
2
+
25
b
2
9a^2 + 25b^2
9
a
2
+
25
b
2
(4) D:
9
a
2
−
25
b
2
9a^2 - 25b^2
9
a
2
−
25
b
2
(5) E: None of these
Related theory
Algebraic Identities
Polynomials
Polynomial Functions
Difference of squares
Algebraic identities: squares and difference of squares
Algebra
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