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tatyana61 [14]
3 years ago
9

Grayson evaluated the expression 4x^2 + 2y x= 3, y = 2 4 (3)^2 + 2(2) 144 + (4) what error did Grayson make ?

Mathematics
1 answer:
grandymaker [24]3 years ago
8 0

Answer:

Grayson did not simplify the question

Step-by-step explanation:

if this didnt help i am sorry :(

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Can you simplify 3(x+2) = 3x+6 in distributive property
Vanyuwa [196]

Hello XD

3(x+2) = 3x+6

Distributive property

(3)(x)+(3)(2) = 3x+6

3x+ 6 = 3x+6

Now subtract 3x from both sides

3x+6-3x = 3x+6-3x

6=6

Subtract 6 from both sides

6-6 = 6-6

0=0

In this case the answer is : All real numbers are solution

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Answer:

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Step-by-step explanation:

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Since you have y alone on one side of the equation......

Use substitution and plug in 1/2x-4 for y in the other equation.


3x+2(1/2x-4)=23\\

Distribute

3x+x-8=23

Combine like terms

4x-8=23

Add 8 to both sides

4x=31

Divide by 4

and x=31/4

Plug this value in for x

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