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3 years ago

Which products result in a difference of squares or a perfect square trinomial? Check all that apply.

Mathematics

2 answers:

SVEN [57.7K]3 years ago

3 0

The following are the answers for these:

(5x + 3)(5x – 3) ----> Difference of squares

(7x + 4)(7x + 4) ----> Perfect square trinomial

(2x + 1)(x + 2) ----> Neither

(4x – 6)(x + 8) ----> Neither

(x – 9)(x – 9)-----> Perfect square trinomial

(–3x – 6)(–3x + 6) -----> Difference of squares.

The easiest way to tell these is that if the parenthesis are exactly the same it will be a perfect square trinomial. If the parenthesis are the same except for the sign in between the terms, it is a difference of square. If it has neither of these, then it is neither.

kvv77 [185]3 years ago

3 0

Answer:

Your answers are:

Step-by-step explanation:

A) (5x + 3)(5x – 3)

B) (7x + 4)(7x + 4)

E) (x – 9)(x – 9)

F) (–3x – 6)(–3x + 6)

I just did the assignment, and I got a 100%. I swear, this is right!

I hope this helps!

- sincerelynini

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3 years ago

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3 years ago

Read 2 more answers

muhammad, a shipping and receiving clerk uses 1 yard, 2 feet and 4 inches Of twine to wrap each carton he packs. he has to pack

antiseptic1488 [7]

Answer:

He will need 51 yards, 1 foot and 8 inches twine to wrap 29 cartons.

Step-by-step explanation:

Muhammad uses 1 yard, 2 feet and 4 inches of twine to wrap each carton he packs.

We know that, 1 yard = 36 inches and 1 foot = 12 inches.

So, 1 yard, 2 feet and 4 inches $=[(1*36)+(2*12)+4]inches = 64$ inches.

That means, he uses 64 inches of twine to wrap each carton.

He has to pack 29 cartons today. So, the total length of the twine he will need $=(64*29) inches= 1856$ inches.

Now....

1856 inches

$=\frac{1856}{36} yards \\ \\= 51 \frac{5}{9} yards \\ \\= 51 yards+(\frac{5}{9}*36)inches \\ \\= 51 yards, 20 inches \\ \\= 51 yards, (12+8)inches \\ \\=51 yards, 1 foot, 8 inches.$

Thus, he will need 51 yards, 1 foot and 8 inches twine to wrap 29 cartons.

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3 years ago

What is the solution to the equation? sqrtx + 3 = 12 HINT: It's not C.

oksano4ka [1.4K]

B.) 81
sq rt of x= 12-3
sq rt of x=9
take the ^2 of both sides to get rid of the sq root
x^2= (9)^2
=81

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2 years ago

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jonny [76]

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2 years ago