What is (x^2-3x)-8(x^2-3x)-20 ?

The solution to (x^2-3x)-8(x^2-3x)-20 is -7x^2+21x-20

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simplify (x^2-3x)-8(x^2-3x)-20

simplify

(x^{2} - 3 x) - 8 (x^{2} - 3 x) - 20

- 7 x^{2} + 21 x - 20

Solution steps

(x^{2} - 3 x) - 8 (x^{2} - 3 x) - 20

Apply rule:

(a) = a

(x^{2} - 3 x) = x^{2} - 3 x

= x^{2} - 3 x - 8 (x^{2} - 3 x) - 20

Expand

- 8 (x^{2} - 3 x) : - 8 x^{2} + 24 x

= x^{2} - 3 x - 8 x^{2} + 24 x - 20

Group like terms

= x^{2} - 8 x^{2} - 3 x + 24 x - 20

Add similar elements:

x^{2} - 8 x^{2} = - 7 x^{2}

= - 7 x^{2} - 3 x + 24 x - 20

Add similar elements:

- 3 x + 24 x = 21 x

= - 7 x^{2} + 21 x - 20

6.75 x 1 0^{6} \cdot 0.2 x 1 0^{6}

(3 x + 2 y^{2})^{5}

(\cdot 4 y - 3) - 2 (z - 2 \cdot (- 3) y^{2})

108 x^{7} \cdot y^{4} - 4000 x^{4} \cdot y^{7}

(- 2 y^{2})^{3}

What is (x^2-3x)-8(x^2-3x)-20 ?
The solution to (x^2-3x)-8(x^2-3x)-20 is -7x^2+21x-20