4 years ago

Please help quickly 19 points

Mathematics

1 answer:

bekas [8.4K]4 years ago

5 0

Answer:

Step-by-step explanation:

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Expand and simplify (<img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D" id="TexFormula1" title="2x^{2}" alt="2x^{2}" align="absmidd

kupik [55]

Answer:

2x(5x + 14) + 15

Step-by-step explanation:

Given: (2 $x^{2}$ + 3)(4x + 5) - 8x( $x^{2}$ - 2)

(2 $x^{2}$ + 3)(4x + 5) - 8x( $x^{2}$ - 2) = 2 $x^{2}$ (4x + 5) + 3(4x + 5) - 8x( $x^{2}$ - 2)

= (8 $x^{3}$ + 10 $x^{2}$ + 12x + 15) - 8 $x^{3}$ + 16x

= 8 $x^{3}$ + 10 $x^{2}$ + 12x + 15 - 8 $x^{3}$ + 16x

collecting like terms to have,

8 $x^{3}$ - 8 $x^{3}$ + 10 $x^{2}$ + 12x + 16x + 15

10 $x^{2}$ + 28x + 15

Thus,

(2 $x^{2}$ + 3)(4x + 5) - 8x( $x^{2}$ - 2) = 10 $x^{2}$ + 28x + 15

= 2x(5x + 14) + 15

5 0

3 years ago

Will mark brainly!

liberstina [14]

Answer:

True

Step-by-step explanation:

Yes, we always assume the radical is a square root if there is no index

8 0

3 years ago

1/3 of 2 feet = how many inches

Nata [24]

1/3 of 2 ft is 8 inches

5 0

3 years ago

Read 2 more answers

Danny brought 40 fl oz,Luis brought? qt,and Carlos brought

Reil [10]

Answer: multifly then divide

Step-by-step explanation:

8 0

3 years ago

You need 3 sticks of butter for every 24 cookies you bake.

Alik [6]

Step-by-step explanation:

3 sticks of butter make 24 cookies

which means we multiplied 3 by 8

then we devide 16 cookies by 8 which is 2 (as you did)

therefore 5 multiplied by 8 equals 40

3 0

4 years ago