Answer:
Step-by-step explanation:
can you show a picture?
Answer:
245
Step-by-step explanation:
1m-100cm
2.45m=2.45x100
Answer:
0=0-12-2523123213123123213123123123+2309203200232020323 divided by 10
Step-by-step explanation:
take all of them add them divide them
Answer:
d
Step-by-step explanation:
Factoring using difference of squares
a² - b² = (a - b)(a + b)
a
x² - 1
= x² - 1²
= (x - 1)(x + 1)
b
x² - y²
= (x - y)(x + y)
c
x² - 4
= x² - 2²
= (x - 2)(x + 2)
d
4 - 16y ← 16y is not a perfect square and so cannot be factored
If it was 4 - 16y² then it could be factored using difference of squares
Multiply both sides by a
(a + 4)a = -3
Regroup terms
a(a + 4) = -3
Expand
a^2 + 4a = -3
Move all terms to one side
a^a + 4a + 3 = 0
Factor a^2 + 4a + 3
(a + 1)(a + 3) = 0
Solve for a
<u>a = -1, -3</u>
