What is (3x-1)^2-9x-7 ?

The solution to (3x-1)^2-9x-7 is 9x^2-15x-6

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simplify (3x-1)^2-9x-7

simplify

(3 x - 1)^{2} - 9 x - 7

9 x^{2} - 15 x - 6

Solution steps

(3 x - 1)^{2} - 9 x - 7

Expand

(3 x - 1)^{2} : 9 x^{2} - 6 x + 1

= 9 x^{2} - 6 x + 1 - 9 x - 7

Group like terms

= 9 x^{2} - 6 x - 9 x + 1 - 7

Add similar elements:

- 6 x - 9 x = - 15 x

= 9 x^{2} - 15 x + 1 - 7

Subtract the numbers:

1 - 7 = - 6

= 9 x^{2} - 15 x - 6

sin^{4} (a) + sin^{2} (a) cos^{2} (a) - sin^{2} (a)

d (\frac{x ^{6}}{3 - 2 x})

cos (x) - 2 cos^{2} (x) + 1

(2 b^{2} - 2 - 5 b + 6 b^{3}) (3 + 3 b^{2} - b)

\frac{a}{( a ^{2} + b ^{5} )}