If x is an integer and y=-2x-8, what is the least value of x which y is less than 9?
Created: 5 years ago |
best des
Area of outer square = 2a x 2a = 4a2
In△BAD
(BD)2 = (AD)2 + (AB)2
(2a)2 = x2 + x2
4a2 = 2x2
2a2 = x2
x = 2 – √a.
Area of inner square = 2 – √ax2 – √a = 2a2
Difference between the areas of the outer and inner square = 4a2−2a2 = 2a2
In△BAD
(BD)2 = (AD)2 + (AB)2
(2a)2 = x2 + x2
4a2 = 2x2
2a2 = x2
x = 2 – √a.
Area of inner square = 2 – √ax2 – √a = 2a2
Difference between the areas of the outer and inner square = 4a2−2a2 = 2a2
Md Azizur Rahman
Founder of Satt
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