2x + 5 =7
Subtracting 5 from both sides
= 2x +5-5 = 7-5
=2x = 2
= x = 2/2
=x = 1
Do you know how to write that equation at the start that is
f(S) = {s
Answer: 31.5
Concept:
When encounter questions that ask for operation on algebraic expressions, using BODMAS or PEMDAS method would be easier. Since this question asked for using BODMAS, then it is:
- Bracket
- Order
- Division
- Multiplication
- Addition
- Subtraction
Solve:
<u>Given</u>
2 × 3 + 45 ÷ 2 - 6 + 9
<u>Simplify by division</u>
=2 × 3 + 22.5 - 6 + 9
<u>Simplify by multiplication</u>
=6 + 22.5 - 6 + 9
<u>Simplify by addition</u>
=28.5 + 9 - 6
=37.5 - 6
<u>Simplify by subtraction</u>
=31.5
Hope this helps!! :)
Please let me know if you have any questions
Rise mean how many units you move up or down from point to point.
Answer: (x-2) is not a factor
Step-by-step explanation:
x^20 - 4x^18 +3x - 6 = 0 is a polynomial.
To test if (x + 2) is a factor, we are to use factor theorem
Make x the subject of the formula
x + 2 = 0
x = 0 - 2
x = -2
Put x = -2 into the equation. If the result on both the left hand side and right hand side is 0, then (x + 2) is a factor
(-2)^20 - 4(-2)^18 + 3(-2) - 6 = 0
1048576 - 4(262144) -6 -6 =0
1048576 - 1048576 -12 = 0
0 -12 = 0
-12 =0
Since LHS is not equal to RHS. (x+2) is not a factor of the equation
