What is simplify-(-3)[2x+12x-y]+6[x-20]-x[2(x-3)]-3 ?

The solution to simplify-(-3)[2x+12x-y]+6[x-20]-x[2(x-3)]-3 is -2x^2+54x-3y-123

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simplify-(-3)[2x+12x-y]+6[x-20]-x[2(x-3)]-3

simplify

- (- 3) [2 x + 12 x - y] + 6 [x - 20] - x [2 (x - 3)] - 3

- 2 x^{2} + 54 x - 3 y - 123

Solution steps

- (- 3) (2 x + 12 x - y) + 6 (x - 20) - x (2 (x - 3)) - 3

Simplify

- (- 3) (2 x + 12 x - y) : 3 (14 x - y)

= 3 (14 x - y) + 6 (x - 20) - x \cdot 2 (x - 3) - 3

= 3 (14 x - y) + 6 (x - 20) - 2 x (x - 3) - 3

Expand

3 (14 x - y) : 42 x - 3 y

= 42 x - 3 y + 6 (x - 20) - 2 x (x - 3) - 3

Expand

6 (x - 20) : 6 x - 120

= 42 x - 3 y + 6 x - 120 - 2 x (x - 3) - 3

Expand

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

= 42 x - 3 y + 6 x - 120 - 2 x^{2} + 6 x - 3

Group like terms

= - 2 x^{2} + 42 x + 6 x + 6 x - 3 y - 120 - 3

Add similar elements:

42 x + 6 x + 6 x = 54 x

= - 2 x^{2} + 54 x - 3 y - 120 - 3

Subtract the numbers:

- 120 - 3 = - 123

= - 2 x^{2} + 54 x - 3 y - 123

(5 - y)^{2}

s^{2} - 1

\frac{15}{735}

\frac{25}{60}

- 25 6^{\frac{1}{4}}

What is simplify-(-3)[2x+12x-y]+6[x-20]-x[2(x-3)]-3 ?
The solution to simplify-(-3)[2x+12x-y]+6[x-20]-x[2(x-3)]-3 is -2x^2+54x-3y-123