Question

If [3m2 + (3*) 2 ) = 81, then find the value of m.​

Answer 1

Answer:-

$\\ \qquad\quad\sf\rightarrowtail 3m^2+3(2)=81$

$\\ \qquad\quad\sf\rightarrowtail 3m^2+6=81$

$\\ \qquad\quad\sf\rightarrowtail 3m^2=81-6$

$\\ \qquad\quad\sf\rightarrowtail 3m^2=75$

$\\ \qquad\quad\sf\rightarrowtail m^2=\dfrac{75}{3}$

$\\ \qquad\quad\sf\rightarrowtail m^2=25$

$\\ \qquad\quad\sf\rightarrowtail m=\sqrt{25}$

$\\ \qquad\quad\sf\rightarrowtail m=5$