Question

PPPPLLLSSS HELP THIS IS WORTH SIXTY PERCENT OF MY GRADE. I DONT GET HOW SINCE IT ONLY TWO QUESTIONS BUT IT IS. PLEASE HELP

1. What is the value of the expression 15⋅6-2^2⋅8+4^3 is ______



2. What is the value of the expression 2^3+2^2⋅2+6-2^1⋅2^0-1 is ______

Answer 1

• 122; 19

Explanation:

#1

• 15 ⋅ 6 - 2² ⋅ 8 + 4³ =
• 15 ⋅ 6 - 4 · 8 + 64 =
• 90 - 32 + 64 =
• 58 + 64 =
• 122

#2

• 2³ + 2² ⋅ 2 + 6 - 2¹ ⋅ 2⁰ - 1 =
• 8 + 4 · 2 + 6 - 2 · 1 - 1 =
• 8 + 8 + 6 - 2 - 1 =
• 22 - 2 - 1 =
• 20 - 1 =
• 19