Question

Раскройте скобки 1)-3(4+5m-6n) 2)-0.2(-14t+z-25y) 3)(-3.1x+7.8y-9.6)*0.1 4)(0.7x-0.6y+0,5z)*(-1.5p)

Answer 1

-3(4+5m-6n)=-12-15m+18n 
-0.2(-14t+z-25y)=2.8t-0.2z+5y 
(-3.1x+7.8y-9.6)*0.1=-0.31x+0.78y-0.96 
(0.7x-0.6y+0.5z)*(-1.5p)=-1.05px+0.9py-0.75pz

Answer 2

1. -3(4 + 5m - 6n) Distributing the -3 to each term inside the parentheses, we get: -3 * 4 - 3 * 5m + 3 * 6n Simplifying further: -12 - 15m + 18n

2. -0.2(-14t + z - 25y) Distributing the -0.2 to each term inside the parentheses, we get: -0.2 * (-14t) + -0.2 * z + -0.2 * -25y Simplifying further: 2.8t - 0.2z + 5y

3. (-3.1x + 7.8y - 9.6) * 0.1 Distributing the 0.1 to each term inside the parentheses, we get: 0.1 * -3.1x + 0.1 * 7.8y + 0.1 * -9.6 Simplifying further: -0.31x + 0.78y - 0.96

4. (0.7x - 0.6y + 0.5z) * (-1.5p) Distributing the -1.5p to each term inside the parentheses, we get: -1.5p * 0.7x + -1.5p * -0.6y + -1.5p * 0.5z Simplifying further: -1.05px + 0.9py - 0.75pz

Note: In the fourth expression, there seems to be a typo in the coefficients. Instead of "0,5z," it should be "0.5z" to represent the decimal value.