The prove to show that the area of the shaded portion is 18x - 30 is as follows: 3x² + 13x - 30 - 3x² + 5x = 18x - 30
<h3>How to find the area of the shaded region?</h3>
The area of the shaded region can be represented as follows:
area of the shaded region = area of rectangle - area of triangle
Therefore,
area of the rectangle = (x + 6)(3x - 5)
area of the rectangle = 3x² - 5x + 18x - 30
area of the rectangle = 3x² + 13x - 30
area of triangle = 1 / 2 × 2x × 3x - 5
area of triangle = 3x² - 5x
Therefore,
area of the shaded portion = 3x² + 13x - 30 - 3x² + 5x
area of the shaded portion = 18x - 30
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Answer:
A
Step-by-step explanation:
Answer:
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Answer:
a. is equal to -21
b. is equal to -1
c. is equal to 31
Step-by-step explanation:
a. 2(-2)²-5
-4²-5
-16-5
= -21
b.2(1)²-5
2²-5
4-5
= -1
c.2(3)²-5
6²-5
36-5
= 31
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