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The rationalizing factor of \sqrt{23} is $°$ $Options^{°}$ $0$ A 24 23 C \sqrt{23} D None of these

$\left(1\right)$ $.-$ $-$ $8$ Let $A=\left(-1.1\right)$ and $B=\left(0.2\right).$ If the function $f:A→B$ defined by $f\left(x\right)=ax+b$ is an onto function? Find $a$ a and $b.$ $\infty $ $-$

$\sqrt{2} $ $450$ $X$ Find $x$ $\square 2$ $\square 4$ $O$ $s9$ sqrt $\left(2\right)$ $\square 1$ $oK$

Solve. $4p^{2}-4p=1$ $O\left(1+sqr2\right)/2,\left(1.sqrt2\right)/2$ $O$ $\left(4+-sqrt32\right)/8$ $O$ $\left(4+.4sqr2\right)/8$ $0$ Prime

$x$ $45^{°}$ $6$ Find $x$ $O6$ $\square 6sq\pi \left(2\right)$ sqrt $\left(2\right)$ $○12sq$ $○3s$ sqrt $\left(2\right)$

$2\right)$ Which of the following is rational no. * $○$ $s9rt\left(25\right)$ $○$ $s9rt\left(101\right)$ $○$ O $s9r+\left(152\right)$