14 + 63 = 2*7 + 9*7 = 7*(2+9)
Answer:
A)
B)
Step-by-step explanation:
On the left, we have five (positive) Xs and one -1. So, we can represent the left with the expression .
On the right, we have six -1s. So, we can represent the right with the expression .
A)
Since the balance is balanced, we know that the two expressions are equal to each other. So, we can write the equation:
B)
Now, we can solve the equation for x. Add 1 to both sides:
The left will cancel. Add on the right:
Finally, divide both sides by 5:
The left side will cancel. So, the value of x is:
Answer:
c.) 4 x (2)^x
Step-by-step explanation:
Answer:
Step-by-step explanation:
answer
15.9454=15.9
The equation has two solutions = [-4 + 2√13]/3] and
= [-4 - 2√13]/3]
Given the question:
(x + 4)^2 = 15 - 2x^2.
To solve the above Equation by using Quadratic Formula:
Solving Steps of Equation:
Expand the expression
Move the expression to the left
= 0
Collect like terms
Use the Quadratic formula:
x = [-b ± √(b2 – 4ac)]/2a
x = [-8 ± √(8^2 – 4x3x1)]/2x 3
Multiply and evaluate :
x = [-8± √(64 – 12)]/6]
Calculate:
x = [-8± 2√13]/6]
Separate the solutions
= [-4 + 2√13]/3]
= [-4 - 2√13]/3]
Hence, The equation has two solutions = [-4 + 2√13]/3] and
= [-4 - 2√13]/3]
Learn more about Quadratic Formula at:
brainly.com/question/9300679
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