Question

Operations on Algebraic Expressions
(b) (llp'+q +51
(d) (3p2 +59 - 97
2 13q+7p² - 20² +4) - 14p² - 2q +70° -3) = ?
(a) (p? + 2q +5r+1)
(c) (-3p²-59 +9r-7)
(c) xº + 2x +15
3
(b) x" -- 3x - 15
(c) 6x? - 7x-3
3. (x + 5)(x-3) = ?
(a) x + 5x - 15
(b) (6x² + 7x - 3)
(c) (x° +8x+16)
4. 2x+3)(3x - 1) = ?
(a) 16x? + 8x - 3)
(b) (x² + 4x +16)
(c) (x? - 6x +36
5. (x + 4)(x + 4) = ?
(a) (x +16)
14 x'-10x
sy
36)​

Answer 1

$\Huge{\color{lightblue}{\fbox{\textsf{\textbf{αηsωεя}}}}}$

$\sqrt{4}$= 2 where 2 is a rational number . Here n is perfect square the $\sqrt{n}$ is rational number

$\sqrt{5}$ = 2.236.. is not rational number But it is irrational number.here n is not a perfect square the $\sqrt{n}$ is irrational number

So $\sqrt{n}$ is not irrational number if n is perfect square..