If a=5−25+2 and b=5+25−2, show that 3a2+4ab−3b2=4+35610.

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If a={{5}+{2}}{{5}-{2}} and b={{5}-{2}}{{5}+{2}}, show that 3a

Question

If $a = \frac{5 + 2}{5 - 2}$ and $b = \frac{5 - 2}{5 + 2}$ , show that $3 a^{2} + 4 ab - 3 b^{2} = 4 + \frac{56}{3} 10$ .

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Charlotte Discussed

a = \frac{5 + 2}{5 - 2}

and

b = \frac{5 - 2}{5 + 2}

, show that

3 a^{2} + 4 ab - 3 b^{2} = 4 + \frac{56}{3} 10

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Question Text

a = \frac{5 + 2}{5 - 2}

and

b = \frac{5 - 2}{5 + 2}

, show that

3 a^{2} + 4 ab - 3 b^{2} = 4 + \frac{56}{3} 10