Question

Me ajude por favor!!!!!!

Resolva a equação
assunto matrizes

Answer 1

Explicação passo-a-passo:

Resolvendo a equação:

$\left|\begin{array}{ccc}x&x\\5&x\\\end{array}\right|=-6\\\\x.x-5.x=-6\\\\x^{2} -5x+6=0\\\\\Delta=(-5)^{2}-4.1.6=25-24=1\\\\x'=\dfrac{-(-5)+\sqrt{1} }{2.1}=\dfrac{5+1}{2}\\\\x'=\dfrac{6}{2} \\\\\boxed{x'=3} \\\\ou\\\\x''=\dfrac{-(-5)-\sqrt{1} }{2.1}=\dfrac{5-1}{2}\\\\x''=\dfrac{4}{2} \\\\\boxed{x''=2}$

As matriz ficam:

$\boxed{\boxed{A=\left[\begin{array}{ccc}2&2\\5&2\\\end{array}\right] \ e\ B=\left[\begin{array}{ccc}3&3\\5&3\\\end{array}\right]}}$