Question

The standard form of quadratic equation (×_2)2+1=2×_3 is​

Answer 1

Answer:

Standard form of quadratic equation Is

ax² + bx + c = 0

Hope it is helpful ❤

Answer 2

Step-by-step explanation:

Draw a perpendicular AD on BC

So,

$$\begin{lgathered}\tt BD = DC ( \because a \ perpendicular \ divides \\\\ \qquad \ the \ base \ in \ two \ equal \ parts \ in \ an \ isosceles \ triangle )\end{lgathered}$$

$$\begin{lgathered}\tt In \ \triangle ACD \\\\ \tt where, \\\\ \tt \star \angle ADC= 90^o \\\\ \tt \star AC = 5 \ and \ \ DC = BC/2 = 8/2 = 4cm\end{lgathered}$$

Applying Pythagoras Theorem in this triangle

$$\begin{lgathered}\tt AC^2 = DC^2 + AD^2 \\\\ \tt \Rightarrow (5)^2 = (4)^2 + AD^2 \\\\ \tt \Rightarrow 25 = 16 + AD^2 \\\\ \tt \Rightarrow 9 = AD^2 \\\\ \tt \Rightarrow AD = 3cm\end{lgathered}$$