展开 (2a+6b)(2a-6b)

解答

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(2 a + 6 b) (2 a - 6 b)

4 a^{2} - 36 b^{2}

求解步骤

(2 a + 6 b) (2 a - 6 b)

Apply Difference of Two Squares

(2 a + 6 b) (2 a - 6 b) : 4 a^{2} - 36 b^{2}

= 4 a^{2} - 36 b^{2}

s im pl i f y (1 - cos^{2} (x)) sec^{2} (x)

s im pl i f y (3 x - 3)^{2} - 7 (3 x - 3) + 15

f a c t or 18 x y - 30 x^{2}

f a c t or 15 + 2 x - x^{2}

s im pl i f y (2 x^{- 3})^{- 2} x^{- 2}