Question

resolva A) x2-169=0. B)x2+64=0

Answer 1

Explicação passo-a-passo:

a) x²-169=0

x² = 169

x = √169

x = 13

b)x²-64=0

x² = 64

x = √64

x = 8

Answer 2

Explicação passo-a-passo:

$\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } \: \: \mathsf {OI, TUDO \: \: J\acute{O}IA \: ? \: \:\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } }$

a)

$\sf{ {x}^{2} - 169 = 0} \\ \sf{ {x}^{2} = 169 } \\ \sf{x = \pm\sqrt{169} } \\ \boxed{\red{ \sf{ x_{1} = 13}}} \\ \boxed{\red{ \sf{ x_{2} = - 13}}}$

b)

$\sf{ {x}^{2} + 64 = 0} \\ \sf{ {x}^{2} = - 64 } \\ \sf{ x = \sqrt{ - 64} } \\ \boxed{\red{ \sf{x \notin \: \mathbb{R}}}}$

$\mathcal{ATT : ARMANDO}$

$\mathfrak{\small03\diagup01\diagup2021} \\ \mathfrak{\small{8} :{25} \: \: pm}$