Question

Me ajudem ai pvf e pra amanhar​

Answer 1

$a = 1 \\ b = 7 \\ ( a + b) {}^{2} = (1 + 7) {}^{2} = {1}^{2} + 2 \times 1 \times 7 + {7}^{2} \\ 1 + 14 + 49 = 64 \\ \\ {a}^{2} + {b}^{2} = {1}^{2} + {7}^{2} =50 \\ \\ a = 4 \\ b = 3 \\ \\ (4 + 3) {}^{2} = {4}^{2} + 2 \times 4 \times 3 + {3}^{2} = 16 + 24 + 9 = 49 \\ \\ {4}^{2} + {3}^{2} = 16 + 9 = 25 \\ \\ a = - 2 \\ b = 8 \\ \\ ( - 2 + 8) {}^{2} = { - 2}^{2} + 2 \times ( - 2) \times 8 + {8}^{2} = 4 - 32 + 64 = 36 \\ \\ {( - 2)}^{2} + {8}^{2} = 4 + 64 = 68$