$y=3x^2+2x\\
y=x(3x+2)\\
y=x(x+\frac{2}{3})\\
x=0 \vee x=-\frac{2}{3}\\\\
f(x)=5x^2-25x+30\\
f(x)=5(x^2-5x+6)\\
f(x)=5(x^2-2x-3x+6)\\
f(x)=5(x(x-2)-3(x-2))\\
f(x)=5(x-3)(x-2)\\
x=3 \vee x=2

$

5 0

3 years ago

Does anyone know these?

Lyrx [107]

Answer:

1a. triangle

1b. triangle

8 0

3 years ago

What is the surface area of a sphere with a diameter of 12 centimeters? (Use 3.14 for π .) 1,808.64 cm 2 452.16 cm 2 150.72 cm 2

svetoff [14.1K]

Sphere Surface Area = PI * diameter²
Sphere Surface Area = 3.14 * 12*12
Sphere Surface Area = 452.16 square centimeters

3 0

3 years ago

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