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IgorLugansk [536]
2 years ago
13

Perform the operation. (9x2 - 8) - (-4x2 - 5x)Anyone know this one?​

Mathematics
1 answer:
Degger [83]2 years ago
7 0

Answer:

5x+18

Step-by-step explanation:

9 x 2-8-(-4 x 2-5x)

18-8-(-4 x 2-5x)

18-8-(-5x-8)

18-8+8+5x

Please give Brainliest

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Simplify the expression: 3(2x2 + 7x + 4) - 8x2 + 15
Softa [21]

Answer:

-2x² + 21x + 27

Step-by-step explanation:

distribute 3 to get:

(6x² + 21x + 12) - 8x² + 15

combine 'like terms' to get:

-2x² + 21x + 27

5 0
3 years ago
Use the x-intercept method to find all real solutions of the equation -9^3-72^2-96x+36=3x^3+x^2-3x+8
Vadim26 [7]

Answer:

 x ≈ 0.290640965127

Step-by-step explanation:

y subtracting the right side of the equation, we get a function that is zero at a real solution for x. The only x-intercept is at approximately 0.290640965127.

___

The graph shows the x-intercept to be 0.2906. The value above was obtained by Newton's method iteration. The roots of this cubic will all be irrational.

7 0
2 years ago
Which side of triangle XYZ is the longest. x=62, y=55, and z=63
Semenov [28]
Z because 63 is larger than 55 and 62
8 0
2 years ago
Find the m TFS.<br><br>Answer choices are:<br>12 degrees<br>76 degrees<br>64 degrees<br>52 degrees​
goblinko [34]
It’s 52 because there are two sides with 64 degrees (the bottom two sides) and you add those to sides together and subtract your combine angle of the bottom 2 sides by 180 degrees which is the degree of all triangles combine and get 52
4 0
2 years ago
1. Mrs. Rodger got a weekly raise of $145. If she gets paid every other week, write an integer describing how the raise will aff
nasty-shy [4]

Answer:

Increase by $145

Step-by-step explanation:

= $ (x + 145 + 145)

= $ (x + 290)

5 0
3 years ago
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