Question

if x=
1 is common root of eqn.
a x² + ax + 3 and
x² +x + b=0 than then a b=​

Answer 1

Answer:

answer is in the attachment

Step-by-step explanation:

hope it's helpful

Answer 2

Answer:

$\huge\bold\red{ANSWER :}$

Step-by-step explanation:

→  $\blue{\bold{\underline{\underline{ANSWER :}}}}$

⇒ $\sf{Given \:that \:x=1$

   $\sf{Given\: equations \: are \implies{ax^2+ax+3=0}$

                                  $\sf{\implies{x^2+x+b=0}}$

⇒  $\sf{Asking\: to\: find\: (ab)=?$

→ $\large{\underline{\rm{\red{SOLUTION :}}}}$

$\sf{\implies{from\: first\: equation, we\: can\: get}$

$\sf{\implies{putting\: x=1 \:in \:equation$

        $\sf{a(1)^2+a(1)+3=0}\\ \\ a+a+3=0\\ \\ 2a+3=0\\ \\ a=-3/2\\ \\{ \boxed{a=-1.5}}$

$\sf{\implies{\red{From\: second\: equation\: we\: get}}}$

$\sf{\implies{Putting\: x=1\: in\: equation}}$

       $(1)^2+1+b=0\\ \\ 2+b=0\\ \\ \boxed{b=-2}}$

 $\sf{\implies{From\: the\: question\:,they\: are\: asking\: to\: find\:(ab)$

 $\sf{\implies{Putting\: a=-1.5\: and\: b=-2$

        $\sf{=(-1.5)(-2)$

        $\sf{\implies\boxed{ab=3}}$