(3x² + 2xy + 4y²) + (6x² - 5xy + 3y²) + (9y² - 25y²)
Get rid of the parenthesis :)
3x² + 2xy + 4y² + 6x² - 5xy + 3y² + 9y² - 25y²
Add like terms.
(3x² + 6x²) + (2xy - 5xy) + (4y² + 3y² + 9y² - 25y²)
Simplify.
(9x²) + (-3xy) + (-11y²)
Get rid of the parenthesis.
9x² - 3xy - 11y²
~Hope I helped!~
Answer:
C
Step-by-step explanation:
Using the Sine rule in Δ ABC
Calculate the measure of ∠ C
∠ C = 180° - (64 + 85)° = 180° - 149° = 31° , then
= 
→ C
Answer:
(2x-3) (2x+3)
zeros, x intercepts: -3/2, 3/2
Step-by-step explanation:
4x^2 -9
We know the difference of squares is a^2 -b^2
This factors into (a-b) (a+b)
Let 4x^2 =a^2
Taking the square root
2x =a
Let b^2 =9
Taking the square root
b= 3
(4x^2-9 ) = (2x-3) (2x+3)
To find the zeros, we set the equation equal to zero
(4x^2-9 ) = (2x-3) (2x+3) =0
Using the zero product property
2x-3 =0 and 2x+3 =0
2x-3+3 = 0+3 2x+3-3 = 0-3
2x=3 2x=-3
Divide by 2
2x/2 = 3/2 2x/2 = -3/2
x = 3/2 x = -3/2
These are the zeros of the equation (which are also the x intercepts)
Answer:
502
Step-by-step explanation:
504-10=494
494+6=500
500+2=502
answer 502
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