Answer:
9x² + 6xy + y²
Step-by-step explanation:
(a + b)² = a² + 2ab + b²
a = 3x
b = y
(3x +y)² = (3x)² + 2*3x*y + y²
= 9x² + 6xy + y²
(3x)² = 3²*x² = 3*3*x² = 9x²
It's 21 square units. If you map it on a complex plane (x-axis is real numbers, y-axis is imaginary numbers) you'll see that the sides of the rectangle is 3 and 7 which multiply to 21.
Answer:
m∠C = 28.1°
Explanation:
angle m∠C has opposite angle of 16 and hypotenuse of 34
using sine rule:
C = 28.07248°
C = 28.1°
25:1 is the constant of proportionality between the number of square yards of grouse to be covered and the number of scoops of grass seed needed.
This was found by reducing the any of the 4 provided proportions, each would end up leading you to 25/1
8x^2+4x^3+3x^4
Hope this helped