Do the reverse. Subtract x^2-2x+6 from 3x^2+7x. If you simplify the final answer becomes 2x^2+9x-6
Answer:
5=.25, 3=.30, 2=.50
Step-by-step explanation:
5×5=.25
Sin θ = cos (90 - θ)
sin 42 = cos (90 - 42)
sin 42 = cos 48
Answer:

Step-by-step explanation:
Given

Required
Simplify
For clarity, group the expression in threes

Evaluate the first group [Divide 8 by 4]

[Divide 9 by 3]


[Divide 15 by 3]

[Divide 16 by 2]


Evaluate the second group [Divide 35 and 25 by 5]

[Divide 49 by 7]

[Divide 24 by 3]


Merge the first and second group



Evaluate the last group [Divide 99 by 9]

[Divide 63 by 9]

[Divide 64 and 80 by 8]

[Divide 10 and 4 by 2]

[Divide 100 by 5]





Hence;

The sum of a polygon's angles are 540.
When you add all the angles together here, you get 456.
Now subtract 456 from 540.
540 - 456 = 84