- Algebraic expressions are combinations of variables , numbers, and at least one arithmetic operation.
2. b
- (1 - 5) = -4
-4 × -4 = 16
3. d
- 2^5/2²
2^5 = 2×2×2×2×2 = 32
2² = 2×2 = 4
= 32/4 = 32÷4
= 8
4. c
if m = -2
- m²-3
= (-2)² - 3
= 4 - 3
= 1
5. b
- 1² + 1³
= 1²= 1
= 1³= 1
1 + 1 = 2
6. a
if x = -2
- (-5x²)
= -5(-2)²
= -5(4)
= - 20
7. d
if a=3 , b= -1
- 2a - 2b
= 2(3) - 2(-1)
= 6 - (-2)
= 6 + 2
= 8
8. d
if x= -3 , y=5
- 2x²y
= 2(-3)²5
= 2(9)5
= 18 × 5
= 90
9. b
if m=5, n -1
- 4(m- n)
= 4(5 - (-1)
= 4(5+1)
= 4(6)
= 24
10. d
if x=4 , y=2
- x²+y²/x-y
= 4² + 2² / 4 - 2
= 4×4 = 16
= 2×2 = 4
= 16 + 4 / 4 - 2
= 20/2
= 10
11. a
- A polynomial is defined as an expression which is composed of variables, constants and exponents, that are combined using the mathematical operations such as addition, subtraction, multiplication and division (No division operation by a variable).
12. d
- A trinomial is a polynomial that has three terms. The first time is an x^2 term, the second term is an x term, and the third term is a constant (just a number).
Answers & Comments
Answer:
AGAIN
1.C (dahil ang tawag doon ay algebraic EQUATION)
2.B
3.D
4.C
5.B
6.A
7.D
8.D
9.B
10.D
11.A (polynomial consists of coefficients & VARIABLES)
12.D
Answer:
1. d
- Algebraic expressions are combinations of variables , numbers, and at least one arithmetic operation.
2. b
- (1 - 5) = -4
-4 × -4 = 16
3. d
- 2^5/2²
2^5 = 2×2×2×2×2 = 32
2² = 2×2 = 4
= 32/4 = 32÷4
= 8
4. c
if m = -2
- m²-3
= (-2)² - 3
= 4 - 3
= 1
5. b
- 1² + 1³
= 1²= 1
= 1³= 1
1 + 1 = 2
6. a
if x = -2
- (-5x²)
= -5(-2)²
= -5(4)
= - 20
7. d
if a=3 , b= -1
- 2a - 2b
= 2(3) - 2(-1)
= 6 - (-2)
= 6 + 2
= 8
8. d
if x= -3 , y=5
- 2x²y
= 2(-3)²5
= 2(9)5
= 18 × 5
= 90
9. b
if m=5, n -1
- 4(m- n)
= 4(5 - (-1)
= 4(5+1)
= 4(6)
= 24
10. d
if x=4 , y=2
- x²+y²/x-y
= 4² + 2² / 4 - 2
= 4×4 = 16
= 2×2 = 4
= 16 + 4 / 4 - 2
= 20/2
= 10
11. a
- A polynomial is defined as an expression which is composed of variables, constants and exponents, that are combined using the mathematical operations such as addition, subtraction, multiplication and division (No division operation by a variable).
12. d
- A trinomial is a polynomial that has three terms. The first time is an x^2 term, the second term is an x term, and the third term is a constant (just a number).