3/4x^2+8x+20=0 factor

1 answer:

6 0

$\frac{3}{4} {x}^{2} + 8x + 20 = 0$
multiplied by 4
$3 {x}^{2} + 32x + 80 = 0 \\ (3x + 20)(x + 4) = 0 \\ so \: x = - \frac{20}{3} \: or \: x = - 4$

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On a coordinate plane, parallelogram A B C D has points (3, 6), (6, 5), (5, 1), and (2, 2).

jeka94

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13 square units

Step-by-step explanation:

The bounding rectangle is 4 units wide and 5 units high, so has an area of 4×5 = 20 square units. From that are subtracted the areas of 4 triangles. 2 of them are 3 wide and 1 high, so have a combined area of 3×1 = 3 square units. The other two are 1 wide and 4 high, so have a combined area of 1×4 = 4 square units.

Then the area of the parallelogram is ...

20 -3 -4 = 13 . . . . square units