2 years ago

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Mathematics

1 answer:

Brut [27]2 years ago

8 0

What’s the question????????

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(13x2+9x-4)-(12x2-2x+6) add or subtract the polynomials

bearhunter [10]

Answer:

$x^{2} +11x-10$

Step-by-step explanation:

$(13x^{2} +9x-4)-(12x^{2} -2x+6)$

Remove the brackets and multiply the minus sign through all the numbers in the second polynomial

$13x^{2} +9x-4-12x^{2} +2x-6$

Rearrange in the highest order

$13x^{2} -12x^{2} +9x+2x-4-6$

Simplify

$x^{2} +11x-10$

6 0

2 years ago

Solve for x. -5x + 13 = -17

Lana71 [14]

Subtract 13 from both sides

-5x = -17 - 13

Simplify -17 - 13 to -30

-5x = -30

Divide both sides by -5

x = -30/-5

Two negatives make a positive

x = 30/5

Simplify 30/5 to 6

x = 6

7 0

2 years ago

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dlinn [17]

60? I don’t know what this mean

7 0

2 years ago

Find the area of athletic field if it's length is 120cm and its width is 28cm .A. 397.6cm B. 3360cm C. 296 cm D. 4592cm E. 3356c

Naddika [18.5K]

Answer:

B 3360

Step-by-step explanation:

Area of Rectangle = Length X Width

120 X 28

= 3360 cm

Answered by Gauthmath

6 0

3 years ago

Read 2 more answers

Solve for x 4r – 9 – 6x = 21

ehidna [41]

Answer:

X= 30-4r/-6

Step-by-step explanation:

1. Move the 9 to the other side. (21+9=30)

2. subtract the 4r and move it to the other side (-6x=21-4r)

3. divide both sides by -6

5 0

3 years ago