To solve the inequality x+7x+7x+7x−6x-6x−6x−14x-14x−14 < 0, we need to find the values of x that make the expression less than zero.
First, let's find the critical points by setting each factor equal to zero: x+7 = 0 x = -7
x-6 = 0 x = 6
x-14 = 0 x = 14
These critical points divide the number line into four intervals: −∞,−7-∞,-7−∞,−7, −7,6-7, 6−7,6, 6,146, 146,14, and 14,∞14,∞14,∞.
Now we test a value in each interval to see if the expression is positive or negative: For x = -8: −1-1−1−14-14−14−22-22−22 > 0, not less than 0 For x = 0: 777−6-6−6−14-14−14 < 0 For x = 10: 171717444−4-4−4 < 0 For x = 15: 222222999111 > 0, not less than 0
Therefore, the solution to the inequality x+7x+7x+7x−6x-6x−6x−14x-14x−14 < 0 is 6 < x < 14.
To solve the inequality x+7x+7x+7x−6x-6x−6x−14x-14x−14 < 0, we need to find the values of x that make the expression less than zero.
First, let's find the critical points by setting each factor equal to zero:
x+7 = 0
x = -7
x-6 = 0
x = 6
x-14 = 0
x = 14
These critical points divide the number line into four intervals: −∞,−7-∞,-7−∞,−7, −7,6-7, 6−7,6, 6,146, 146,14, and 14,∞14,∞14,∞.
Now we test a value in each interval to see if the expression is positive or negative:
For x = -8: −1-1−1−14-14−14−22-22−22 > 0, not less than 0
For x = 0: 777−6-6−6−14-14−14 < 0
For x = 10: 171717444−4-4−4 < 0
For x = 15: 222222999111 > 0, not less than 0
Therefore, the solution to the inequality x+7x+7x+7x−6x-6x−6x−14x-14x−14 < 0 is 6 < x < 14.