Question

ex 8 si 9. daca stie cineva sa le faca, va rog! dau coroana​

Answer 1

Răspuns:

${2x}^{2} = 150 = > 2x = \sqrt{150 } = > 2x = 12.24 = >x = 6.12$

${3x}^{2} = 162 = > 3x = \sqrt{162} = > 3x = 12.72 = > x = 4.24$

${5x}^{2} = 135 = > 5x = \sqrt{135} = > 5x = 11.61 = > x = 2.32$

${7x}^{2} = 350 = > {7x}^{} = \sqrt{350} = > 7x = 18.70 = > x = 2.67$

${x}^{2} = 0.5 = > x = \sqrt{0.5} = > x = 0.70$

${x}^{2} = 1.5 = > x = \sqrt{1.5} = > x = 1.22$

${x}^{2} = - 0.1 = > x = - \sqrt{ 0.1} = - 0.31$

${x}^{2} = 0.6 = > x = \sqrt{0.6 } = > x = 0.77$

Answer 2

Răspuns:

Explicație pas cu pas:

9a) x^2 = 150/2 = 75, x = -+5√3

b) x^2 = 162/3 = 54,  x = -+3√6

c) x^2 = 135/5 = 27,  x = -+3√3

d) x^2 = 350/7 = 50, x = -+5√2

9a) x^2 = 8/10 = 4/5,  x = -+2/√5 = -+2√5/5

b) x^2 = 15/10 = 3/2,  x = -+√(3/2)

c) imposibil,  x^2 > 0

d) x^2 = 6/10 = 3/5,  x = -+√(3/5)