Question

please help me in getting answer
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Answer 1

Answer:

27

Step-by-step explanation:

a-2. b-3. c-4 ok gotit

Answer 2

Answer:

we know the formula:

$(a + b + c) {}^{2} = {a}^{2} + {b}^{2} + {c }^{2} = ( ab + bc + ca)$

Step-by-step explanation:

Given:

a+b+C=9 and ab+bc+ca=26

Now putting the values in the above formula,

$( 9) {}^{2} = {a }^{2} + {b}^{2} + {c}^{2} + 2 \times 26$

$81 = ( {a}^{2} + {b}^{2} + {c}^{2} ) + 52$

$( {a }^{2} + {b}^{2} + {c}^{2} ) = 81 - 52$

${a }^{2} + {b}^{2} + {c}^{2} = 29$

Answer