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murzikaleks [220]
3 years ago
11

How many solutions does an equation of the form x^2- k^2= 0 have?

Mathematics
1 answer:
N76 [4]3 years ago
8 0
1. Use Difference of squares: a^2-b^2=(a+b)(a-b)
(x+k)(x-k)=0

2. Solve for x and k
x=+-k
k=+-x
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Please help me solve this
OlgaM077 [116]

Answer:

645320

Step-by-step explanation:

Given: 6_5_2_

If a multiplication sign is placed between the second and third digit, and an equal sign is placed between the third and fourth digit, then

6_ × 5 = _2_

The passcode contains 6 DIFFERENT digits, so we know the missing numbers cannot be 6, 5, or 2.

So, do a trial and error session of multiplying 5 by numbers it could possibly be (60, 61, 63, 64, 67, 68, 69).

64 × 5 = 320. It is the only equation that is both correct and matches the digits given, so the missing digits are 4, 3, and 0. Barry's passcode is 645320.

4 0
3 years ago
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maksim [4K]

Answer:

i think the answer is 5

Step-by-step explanation:

6 0
3 years ago
What is the value of this expression?
jekas [21]

Answer:

108

Step-by-step explanation:

we first add 7+8=15 then 15×2=30 30+6=36 36×2=108

8 0
3 years ago
Read 2 more answers
PLEASE HELP ME ASAP
pickupchik [31]

lol we have the same question on our test besides i’m in middle school Answer: idfk

Step-by-step explanation: don’t ask me i’m failing math

7 0
3 years ago
Let s(t) = 36 − t. find the equation of the tangent line to s(t) when t = 0.
tatiyna
When t = 0 the point on the graph is (0,36). Your equation is just a line and always has the same tangent line so your equation is the same s = 36 - t.
5 0
3 years ago
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