Answer:
Step-by-step explanation:
(a - b)² = a² - 2ab +b²
Area of rectangle = length * width
= (2x - 5)(2x -5)
= (2x - 5)²
= (2x)² - 2*(2x)(5) + 5²
= 4x² - 20x + 25
If you have a calculator it would be easy yoo plug in y= so I’ll just help it’s C
Answer:
The correct answer is option C
a = 10√3, b = 5√3, c = 15 and d = 5
Step-by-step explanation:
Points to remember
The angles of a right angled triangle, 30°, 60° and 90° then sides are in the ratio, 1: √3 : 2
<u>To find the value of variables</u>
From the figure we can see 2 right angled triangle with angle 30, 60 and 90
we get, d= 5 then b = 5√3
b = 5√3 the c = 5√3 * √3 = 15
and a = 2 * 5√3 = 10√3
Therefore the correct answer is option C
a = 10√3, b = 5√3, c = 15 and d = 5
