Question

How to solve the problem

Answer 1

Answer:

x=5

Step-by-step explanation:

∠D=∠E (angles opposite to equal sides are equal)

So, $x^{2}$=3x+10

    10=$x^{2}$-3x

    10=x(x-3)

we know 5×2= 10 & 5-3=2,

So, 10=5×(5-3)

      10=5×2

∴x=5