The solution of inequality is less than or equal to minus one

The solution of inequality is less than or equal to minus one


-x/5+x/15≤-1
-5x+x≤-15
-4x≤-15
4x≥15
x≥3.75



25 square - x square = 17 square - (28-x) square, how much is x equal?


Square of 25-x = square of 17 - (28-x)
x^2-(28-x)^2=25^2-17^2
x^2-x^2+56x-28^2=336
56x=336+784
56x=1120
x=20



What is the square of 10-x = 17 - (10-x) equal to
Answer yes and offer a reward


10²-x²=17-10+x
100-x²-17+10-x=0
x²+x-93=0
X = (- 1 + root 373) / 2
Or (- 1-radical 373) / 2