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Kazeer [188]
3 years ago
15

Which expression is not a perfect square trinomial?

Mathematics
2 answers:
puteri [66]3 years ago
8 0

Answer:

Remember that a perfect square trinomial can be factored into the form (a+b)^2

or (a-b)^2

Examples:

(x+2)(x+2) is a perfect sq trinomial --> x^2+4x+4

(x-3)(x-3) is a perfect sq trinomial --> x^2-6x+9

(x+2)(x-3) is not a perfect square trinomial because its not in the form (a+b)^2 or (a-b)^2

Now to answer your question,

for the first one, x^2-16x-64, you cannot factor it so it is not a perfect square trinomial

for the second one, 4x^2 + 12x + 9, you can factor that into (2x+3)(2x+3) = (2x+3)^2 so this is a perfect square trinomial

for the third one, x^2+20x+100 can be factored into (x+10)(x+10) so this is also a perfect square trinomial

for the fourth one, x^2+4x+16 cannot be factored so this is not a perfect square trinomial

Therefore, your answer is choices 2 and 3

Read more on Brainly.com - brainly.com/question/10522355#readmore

Step-by-step explanation:

belka [17]3 years ago
8 0

Answer:

A. 121 plus 11 y plus y squared; 121+11y+y^2

Step-by-step explanation:

We are asked to choose the expression that is not a perfect square trinomial.

We know that a perfect square trinomial is in form a^2\pm 2ab+b^2.

A. 121 plus 11 y plus y squared

121+11y+y^2

11^2+11y+y^2

For this expression to be a perfect square trianomal, the middle term needs to be 2*11y=22y. Since the middle term is not equal to 2ab, therefore, option A is not a perfect square trinomial.

B. 100 minus 20 y plus y squared

100-20y+y^2

10^2+2*10y+y^2

Therefore, option B is a perfect square trinomial.

C. 81 plus 18 y plus y squared

81+18y+y^2

9^2+2*9y+y^2

Therefore, option C is a perfect square trinomial.

D. 144 plus 24 y plus y squared

144+24y+y^2

12^2+2*12y+y^2

Therefore, option D is a perfect square trinomial.

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Answer:

2a+3b

Step-by-step explanation:

There wouldn't be a simplfied answer or solution if you don't have a solution for either a or b or both. And they are not like terms, so you can't add them together.

So the answer is 2a + 3b.

I hope this helps!

Have a great day!

6 0
3 years ago
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Step-by-step explanation:

point slope formula: y-y1=m(x-x1)

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input numbers

so slope:

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y and 8 are adding so we need to subtract on both sides

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5 0
2 years ago
Julie gives 7 pieces of candy to each of her friends. If Julie gives all of her candy away, which amount of candy could have bee
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To find the answer to this problem, you just need to figure out which total amount of candy is divisible by 7.

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Obviously, Julie cannot give a fraction of an amount of candy to someone.  So that rules out that she had 162, 145, or 128 pieces of candy.  

The only amount of candies that Julie could have that is divisible by 7 is 161 candies, which means that 161 is your answer.</span>
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Step-by-step explanation:

Since we were given m and n, we plug them into the expression and solve.

-2(-6)+4(-5)²            [exponent]

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Now, we know that the value of the expression is 112.

7 0
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