3 years ago

1. Which is equivalent to the expression below? (3.x2 – 2x + 5) - (2x2 – 5x + 1)

Mathematics

2 answers:

antiseptic1488 [7]3 years ago

7 0

Answer:

x^2 + 3x + 4

Step-by-step explanation:

(3.x2 – 2x + 5) - (2x2 – 5x + 1) Combine like terms: x^2, x and constants:

3x^2 - 2x^2 -2x + 5x + 5 - 1

This condenses to

x^2 + 3x + 4

Nana76 [90]3 years ago

5 0

Answer:

x = 6

x = 1

Step-by-step explanation:

(3x² - 2x + 5) - (2x² - 5x + 1)

= 3x² - 2x² - 2x - 5x + 5 + 1

= x² - 7x + 6

= (x - 6)(x - 1)

x - 6 = 0

x = 6

x - 1 = 0

x = 1

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Lostsunrise [7]

Answer:

The angle between the two sides of the right triangle is aproximately 31.003º.

Step-by-step explanation:

From image attached on question we infer that we need to find the angle between sides of lengths 6 (adjacent leg) and 7 (hypotenuse) in the right triangle. The angle can be found by means of this trigonometric ratio:

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