What is expand-4(2x-5=15) ?

The solution to expand-4(2x-5=15) is -8x+20=15

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expand-4(2x-5=15)

expand

- 4 (2 x - 5 = 15)

- 8 x + 20 = 15

Solution steps

- 4 (2 x - 5 = 15)

= - 4 (2 x - 5 \cdot 15 =)

Apply the distributive law:

a (b - c) = ab - a c

a = - 4, b = 2 x, c = 5 = 15

- 4 \cdot 2 x - (- 4) \cdot 5 = 15

Apply minus-plus rules

- (- a) = a

- 4 \cdot 2 x + 4 \cdot 5 = 15

Expand

- 4 \cdot 2 x + 4 \cdot 5 : - 8 x + 20

- 8 x + 20 = 15

\frac{f ( x + h ) - x ^{2} - 6 x + 3}{h}

(- 8 x + 7 y) (4 x + 2 y) \Rightarrow

(- 6, - 2) y (- 3, 2)

0 (x - (- 2))

A (- 3, - 4) y B (- 5, 6)