Question

Puteti sa.mi dati si mie rezultatele la
Ex-1....(1-5x)la a doua
Ex-2...(3a+2)la a doua
Ex-3....(radical din 3+1)la a doua

Answer 1

${(1 - 5x)}^{2} = 1 - 10x + {25x}^{2}$

${(3a + 2)}^{2} = {9a}^{2} + 12a + 4$

${ (\sqrt{3} + 1)}^{2} = 3 + 2 \sqrt{3} + 1$

$= 4 + 2 \sqrt{ 3} = 2(2 + \sqrt{3} )$