Help with algebra please
1 answer:
Required expression is:
Step-by-step explanation:
The distributive property states that:
We need to write the expression in such a way that if distributive expansion is applied, we get the same expression.
Solving:
Given Expression:
Converting into Distributive Property:
Taking 3x^3 common from all the terms:
So, Now if we apply distributive expansion i.e, multiply 3x^3 with all the terms inside the bracket we get:
Which is same as given expression.
So, Required expression is:
Keywords: Algebra, Distributive Property
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Note that
sin(x + y) = sin(x) cos(y) + cos(x) sin(y).
Therefore by setting x = π/2 and y = π/7, obtain
sin(π/2 + π/7) = sin(π/2)*cos(π/7) + cos(π/2)*sin(π/7)
The right side is what we want to evaluate. It is equal to
sin(π/2 + π/7) = sin (9/14)π
Answer:
sin(x + y) = sin(x) cos(y) + cos(x) sin(y).
Therefore by setting x = π/2 and y = π/7, obtain
sin(π/2 + π/7) = sin(π/2)*cos(π/7) + cos(π/2)*sin(π/7)
The right side is what we want to evaluate. It is equal to
sin(π/2 + π/7) = sin (9/14)π
Answer: