If m = 2, find the value of $3 m^{2} - 2 m - 7$ .
[2 Marks]

Open in App

Solution

$3 m^{2} - 2 m - 7 = 3 (2)^{2} - 2 (2) - 7$
[putting m = 2]

$= 3 \times 4 - 2 \times 2 - 7 = 12 - 4 - 7$
$= 12 - 11 = 1$
[ 2 mark ]

Suggest Corrections

Similar questions

If $m = 2,$ find the value of:

(i) $m - 2$ (ii) $3 m - 5$ (iii) $9 - 5 m$

(iv) $3 m^{2} - 2 m - 7$ (v) $\frac{5 m}{2} - 4$

If $m = 2$ , find the value of $3 m^{2} - 2 m - 7$ .

m = 2

m - 2, 3 m - 5, 9 - 5 m

3 m^{2} - 2 m - 7

\frac{5 m}{2} - 4

- \frac{2}{7}, m, - \frac{7}{2} (m + 2)

m

(2)^{m + 1} \times 2^{5} = 4^{- 2}

m

Join BYJU'S Learning Program