Question

please write answer and explain the answer ​

Answer 1

Answer:

the value of a²+b²= 73. pls like my answer

Step-by-step explanation:

given,

a+b=9

& ab= 4

therefore,

(a+b)²= a²+b²+2ab

now putting the given values in above equation , we get,

=> (9)²=a²+b²+2(4)

=. 81 = a²+b²+ 8

= a²+b²= 81-8

= a²+b²= 73

hope this help you .

Answer 2

$Given \: a + b = 9 \: ---(1) \: and$

$ab = 4 \: --(2)$

$Value \: of \: a^{2} + b^{2}$

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

$= 9^{2} - 2 \times 4$

$= 81 - 8$

$= 73$

Therefore.,

$\red{ Value \: of \: a^{2} + b^{2}}\green { = 73 }$

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