Question

its is very hard question question but if you answer it you will more point question number 9 ka 4 only<br />if you give write answer i mark as brainlist answer <br />and follow it

Answer 1

${a}^{2} = {( - 2)}^{2} = 4$
${b}^{2} = { - 3}^{2} = 9$
${c}^{2} = {2}^{2} = 4$
$1) {a}^{2} + {b}^{2} + {c}^{2} = 4 + 9 + 4 = 17$
$2)4abc = 4 \times ( - 2) \times ( - 3) \times (2) = 48$
$3)ab + bc + ca = ( - 2) \times ( - 3) + ( - 3) \times (2) + (2) \times ( - 2) = 6 \times ( - 6) \times ( - 4) = 144$
$4)3ab - 4bc + 5ca = 3 \times ( - 2) \times ( - 3) - 4 \times ( - 3) \times (2) + 5 \times (2) \times ( - 2) = 18 + 24 - 20 = 22$
$5) \frac{ab}{c} + 9 = \frac{( - 2) \times ( - 3)}{2} + 9 = 3 + 9 = 12$