Question

alguien me puede ayudar con esto?por favor,lo necesito los pasos,no solo la respuesta ​

Answer 1

Respuesta:

1 ) (2.4+12)(6-4) = 28.8

(2.4+12)(6-4)

= ((2.4+12))((6-4))

= (14.4)(2)

= 28.8

2 ) 2³×4-(6:3)+12×2-15 = 39

2³×4-(6:3)+12×2-15 ; 2³ = 2×2×2 = 8 ==== > 2³ = 8

= (8×4)-(6:3)+(12×2)-15

= 32-(6:3)+24-15 ; 6:3 = 2

= 32-2+24-15

= (32+24)+(-15-2)

= 56+(-17)

= 56-17

= 39

3 ) 2 {4[7+4(5.3-9)]-3(40-8)} = -254.4

2{4[7+4(5.3-9)]-3(40-8)} ; 5.3-9 = -3.7

= 2{4[7+4(-3.7)]-3(40-8)} ; 4(-3,

.7) = - 14,8

= 2{4[7-14.]-3(40-8)} ; 40-8 = 32

= 2{4[7-14.8]-3(32)} ; 3×32 = 96

= 2{4[7-14.8]-96}

= 2{4[-7.8]-96}

= 2((4(-7.8)-96) ; 4(-7.8) = -31.2

= 2(-31.2-96) ; (-31.2-96) = -(31.2+96) = -(127.2)

= 2(-127.2)

= -254.4

4 ) [(2)⁵-(3)³]² = 25

[(2)⁵-(3)³]² ; (2)⁵ = 2×2×2×2×2 = 32 ====== > (2)⁵ = 32

= [(32)-(3)³]² ; (3)³ = 3×3×3 = 27 ======= > (3)³ = 27

= [(32)-(27)]² ; 32-27 = 5

= [(5)]²

= (5)² ; (5)² = 5×5 = 25 ========= > (5)² = 25

= 25