Respuesta:
A.
1) [tex]\sqrt{4 + 21}[/tex] + √5. √5 - 2⁰ + (2+3)² - √4
√25 + 5 - 1 + (5)² - 2
5 + 5 - 1 + 25 - 2
10 - 1 + 25 - 2
9 + 25 - 2
34 - 2
32
2) [tex]\sqrt[3]{(8-5)^{2} - 1 }[/tex] + [tex]\sqrt{80 + 9:9}[/tex] - (2+3) :5 + ∛8 + 2²
[tex]\sqrt[3]{3^{2} - 1}[/tex] + [tex]\sqrt{80 + 1}[/tex] - 5 : 5 + 2 + 4
[tex]\sqrt[3]{9 - 1}[/tex] + √81 - 1 + 2 + 4
∛8 + 9 -1 + 2 + 4
2 + 9 - 1 + 2 + 4
11 - 1 + 2 + 4
10 + 2 + 4
12 + 4
16
B.
1) x+ 5 = 8
x= 8-5
x= 3
2) 3(x+2) = 27
3x + 6 = 27
3x = 27-6
3x = 21
x=21/3
x= 7
3) 4(x+1) - 5 = 2(x+3) + 7
4x + 4 - 5 = 2x + 6 + 7
4x - 1 = 2x + 13
4x - 2x = 13 + 1
2x = 14
x= 14/2
x= 7
4) (x + 3)² = 4
x² + 6x + 9 = 4
x² + 6x + 5
x 1
x 5
(x + 1) (x + 5)
x= -1 ; -5
5) [tex]\sqrt[3]{x + 3}[/tex] = 2
x + 3 = 2³
x + 3 = 8
x= 8 - 3
x= 5
