Question

efetue

a)(x+1)²+(x-1)²+(x+1).(x-1)
b)(x+y).(x-y)
c)(3a-1)²+(a-2)²
d) (m+1)².(m-1)-(m-1)²
e) (p+5)²-(p-5

Answer 1

a) x² + 2x + 1 + x² - x + 1 + (x² - x + x - 1)
2x² + x + 2 + x² - 1 = 3x² + x + 1
b) x² - xy + xy - y² = x² - y²
c) 9a² - 6a + 1 + (a² -4a + 4) = 10a² - 10a + 5
d) m² + 2m + 1 (m - 1)
m³ + 2m² + m - m² - 2m - 1 - (m - 1)²
m³ + m² - m - 1 - (m² - 2m + 1)
m³ + m² - m - 1 - m² + 2m - 1 = m³ + m - 2
e) p² + 10p + 25 - p + 5 = p² + 9p + 30

Answer 2

Resposta:

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