Sagot :
ANSWER (W/ SOLUTIONS)
1. (PROBABLY HAS A MISSING SIGN)
2. A. 21
= (-5)²- [(4+3×2²)÷4]
= 25 - 4
= 21
3. A. 81
= 3² × (6 - 3)²
= 9 × 6
= 81
4. D. 495
= 4 × (1+4)³- 5
= 4 × 125 - 5
= 500 - 5
= 495
5. B. 15
= 47 - 8 × (3 - 1)²
= 47 - 8 × 4
= 47 - 32
= 15