Question

If a+b=7 and ab=10 then a²+b²=
​

Answer 1

Answer:

29 is the answer

Step-by-step explanation:

Hope the answer helps you

Answer 2

$\sf { \red\bigstar \: \huge{ \pink{ \boxed{ \blue{ \pmb{ \frak{ \bf{answer}}}}}}}}$

$\implies \: \sf \:( {a}^{2} + {b}^{2} ) = {a}^{2} + {b}^{2} + {2ab}^{2}$

$\sf \implies \: {a}^{2} + {b}^{2} = (a + b {)}^{2} - 2ab$

$\sf \boxed{ \longmapsto{ \: \: {7}^{2} - 2(10)}}$

$\sf \implies \: \: 49 - 20$

$\sf {a}^{2} + {b}^{2} = 29$

$\sf \green \bigstar{ \orange{ \fbox{ \red{ans: \: 29}}}}$

$\rule{1222pt}{2.0pt}$

$\sf \red \star \blue{ \fbox{formula \: used}}$

$\sf{a { }^{2}  + b {}^{2} } = (a + {b)}^{2} - 2ab$

hope its help u

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