Question

determine a solucao equacoes incompleta 2 grau, a)x²-7=0 b)x²-25=0 c)x²-8=0 d)7x²-14=0

Answer 1

a) x² - 7 = 0

x² = 7

x = +-√7

b) x² - 25 = 0

x² = 25

x =+- √25

x = +-5

c) x² - 8 = 0

x² = 8

x =+-√8

d) 7x² - 14 = 0

7x² = 14

x² = 14/7

x² = 2

x = +-√2