Solve the equation 1. (x + 3) (- 2) = 142. 2x (the square of 2) - 5x-3 = 0.3q Speed up

Solve the equation 1. (x + 3) (- 2) = 142. 2x (the square of 2) - 5x-3 = 0.3q Speed up

1. (x + 3) (- 2) = 14 x + 3 = 14 / (- 2) = - 7 x = - 7-3 = - 10 2.2x ^ 2-5x-3 = 0 (x-3) (2x + 1) = 0, X1 = 3, X2 = - 1 / 2 question: what does 14 / (1-2) mean? Answer: you said the first question, not what you said, is 14 / (- 2), that is 14 divided by - 2

The solution equation: X-2 / 3 = 1 / 5 x + 1 / 3 = 1 / 2 + 1 / 6 X-5 / 12 = 3 / 8 4 / 7-x = 1 / 3 14.5-3.1 x = 11.4

x-2/3=1/5 x=1/5+2/3x=13/15x+1/3=1/2+1/6 x+1/3=2/3x=2/3-1/3x=1/3x-5/12=3/8 x=3/8+5/12x=19/244/7-x=1/3 x=4/7-1/3x=5/2114.5-3.1x=11.43.1x=14.5-11.43.1x=3.1x=3.1÷3.1x=1