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B. Find the value of the expression given the value of the variables, Show your solution. (2pts) 1. 4x+1:x=1 2. 2.7? - 3x + 5 : x = 2 3, ab - 1:2 = -2,5--1​

Sagot :

Answer:

B. Find The Value Of The Expression Given The Value Of The Variables.Show Your Solution.

1. 4x+1 = 5

2. 2x² - 3x + 5 = 7

3. ab - 1 = 1

Solution –

1. 4x + 1

= 4(1) + 1

= 4 + 1

= 5

2. 2x² - 3x + 5

= 2(2)² - 3(2) + 5

= 8 - 3(2) + 5

= 8 - 6 + 5

= 7

3. ab - 1

= (-2)(-1) - 1

= 2 - 1

= 1

C. Add The Following Algebraic Expressions.

1. 2x+3y + 3x + 2y = 5x + 5y

2. 3x² + 4x - 1 + 2x² - 2x - 5 = 5x² + 2x - 6

Solution –

1. 2x + 3y + 3x + 2y

= 5x + 3y + 2y

= 5x + 5y

2. 3x² + 4x - 1 + 2x² - 2x - 5

= 5x² + 2x - 1 - 5

= 5x² + 2x - 6

D.Substract The Following Algebraic Expressions.

1. 3a - 2b - a+ 3b = 2a + b

2. 4x² + 4x - 3 - 2x² + 4x - 2 = 2x² + 8x - 5

Solution –

1. 3a - 2b - a + 3b

= 2a - 2b + 3b

= 2a + b

2. 4x² + 4x - 3 - 2x² + 4x - 2

= 2x² + 8x - 3 - 2

= 2x² + 8x - 5

Step-by-step explanation:

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