**Question:**

Classify the following polynomials as linear, quadratic, cubic and biquadratic polynomials:

1. $x+x^{2}+4$

2. $3 x-2$

3. $2 x+x^{2}$

4. $3 y$

5. $t^{2}+1$

f. $7 t^{4}+4 t^{2}+3 t-2$

**Solution:**

Given

1. $x+x^{2}+4$ - it is a quadratic polynomial as its degree is 2

2. $3 x-2$ - it is a linear polynomial as its degree is 1

3. $2 x+x^{2}-$ it is a quadratic polynomial as its degree is 2

4. $3 y$ - it is a linear polynomial as its degree is 1

5. $t^{2}+1$ - it is a quadratic polynomial as its degree is 2

f. $7 t^{4}+4 t^{2}+3 t-2$ - it is a bi-quadratic polynomial as its degree is 4