Question

calcule:
a) (2a+2b)²=

b) (2a-2b)²=

c) (3x+y)²=

d) (3x-y)²=

e) (x+2x/3)²=

Answer 1

vamos aos cálculos...

calcule:
a) (2a+2b)²= 4a² + 8ab + 4b²

b) (2a-2b)²= 4a² - 8ab + 4b²

c) (3x+y)²= 9x² + 6xy + y²

d) (3x-y)²= 9x² - 6xy + y²

e) (x+2x/3)²=x² + 4x²/3 + 4x²/9

Answer 2

Respostas:

a) (2a + 2b)² = 4a² + 8ab + 4b²

b) (2a - 2b)² = 4a² - 8ab + 4b²

c) (3x + y)² = 9x² + 6xy + y²

d) (3x - y)² = 9x² - 6xy + y²

e) (x + 2x/3)² = x² + 4x²/3 + 4x²/9 = (9x² + 12x² + 4x²)/9 = 25x²/9