If a - b -9- and a - b -5- find the value of 2 a 2- b 2A- 106B- 94C- 45D- 100

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Multiplying Squares Using Associative Property

If a + b =9, ...

Question

If $a + b = 9$ , and $a - b = 5$ , find the value of $2 (a^{2} + b^{2})$ .

$100$

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$106$

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$94$

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$45$

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If $(a + b) = 5$ and $a b = 6$ ,find the value of $a^{2} + b^{2}$ ; $a > b$

x, y, a

b

[\begin{matrix} 3 x + 4 y & 2 & x - 2 y a + b & 2 a - b & - 1 \end{matrix}] = [\begin{matrix} 2 & 2 & 4 5 & - 5 & - 1 \end{matrix}]

a = \sqrt{6} + \sqrt{5}; b = \sqrt{6} - \sqrt{5}

2 a^{2} - 5 a b + 2 b^{2}

b

[\begin{matrix} a - b & 2 a + c 2 a - b & 3 c + d \end{matrix}] = [\begin{matrix} - 1 & 5 0 & 13 \end{matrix}]

∣ ∣ ∣ ∣ \begin{matrix} a + b & 2 a + b & 3 a + b 2 a + b & 3 a + b & 4 a + b 4 a + b & 5 a + b & 6 a + b \end{matrix} ∣ ∣ ∣ ∣

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