Question

1. The two equal sides of an isosceles triangle are (5x-7) cm and (x+1) cm. If the third side is (x) cm, find the find its perimeter.

2.If a+b=2.3 and ab=1.12, find the value of a-b.
3.If a-b=3 and ab= 6.75, find the value of a+b.

Answer 1

$48y2 {.15110y \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} }^{2}$