Question

In an equilateral triangle ABC, side AB = x² + x, and side BC = 5x + 5. Find the perimeter and area of the triangle.

I need to use the quadratic formula to solve this problem. Any help would be appreciated.

Answer 1

Answer:

The perimeter of an isosceles triangle is the sum of all the three sides. Since an isosceles triangle has 2 equal sides, the perimeter is twice the equal sides plus the different side. It is measured in linear units such as inches (in), yards (yd), millimeters (mm), centimeters (cm), and meters (m). Let us understand the formula to find the perimeter in the next section.

Answer 2

Step-by-step explanation:

FIRST WE HAVE TO KNOW THE VALUE OF TRIANGLE CA

BC=CA

5X+5=X

5X=X-5

5X-X=-5

4X=-5

X=-5/4

X=1.25

SO ANGLE CA =1.25

AC=1.25

BA=1.25

PERIMETER OF TRIANGLE=A+B+C=PERIMETER

1.25+1.25+1.25=3.75 P=3.75