Question

pls give explaination​

Answer 1

Answer:

a. a2+b2+c2

=2(2)+-3(2)+2(2)

=4+-6+4

=8-6

2

b. ab/c+9

=2-3/2+9

-1/2+9

-0.5+9

=8.5

c.ab+bc+ca

2-3+-3+2+2+2

=2

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Answer 2

a)

${a}^{2} + {b}^{2} + {c}^{2}$

${2}^{2} + {( - 3)}^{2} + {2}^{2}$

$4 + 9 + 2$

$15$

b)

$\frac{ab}{c} + 9$

$\frac{(2)( - 3)}2 + 9$

$\frac{ - 6}{2 } + 9$

$- 3 + 9$

$6$

c)

ab + bc + ca

(2)(-3) + (-3)(2) + (2)(2)

-6 + (-6) + 4

-6 -6 + 4

-12 + 4

-8

THESE ARE YOUR ANSWER. HOPE IT HELPS YOU......