Resolva no caderno e selecione as resposta corretas de: (a)(x – 6)²= (b) (5x – 8)²= (c) (9x – 7)²= (d) (11x – 6z)²= *
A) (a)x² +36 (b)25x² – 80x + 64 (c)81x² – 126x + 49 (d)121x² – 132xz + 36z²
B) (a)x – 12x +36 (b)25x² – 80x + 64 (c)81x² – 126x + 49 (d)121x² – 132xz + 36z²
C) (a)x² – 12x +36 (b)25x² – 80x + 64 (c)81x² – 126x + 49 (d)121x² – 132xz + 36z²
D) (a)x² – 12x +36 (b)25x² – 60x + 64 (c)81x² – 126x + 49 (d)121x² – 132xz + 36z²
Respostas
respondido por:
2
(a)(x – 6)²= (b) (5x – 8)²=
(x -6)(x -6) = (5x - 8)(5x - 8) =
x² - 12x +36 25x² - 80x + 64
(c) (9x – 7)²= (d) (11x – 6z)²= *
(9x - 7)(9x -7) = (11x - 6z)(11x - 6z) =
(81x² - 126x + 49 121x² - 132xz + 36z²
B) (a)x – 12x +36
(b)25x² – 80x + 64
(c)81x² – 126x + 49
(d)121x² – 132xz + 36z²
A reposta correta é a opção B
Anônimo:
oiii
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