You just need to replace x with the value given
x = -5
-27
27
-8
-16
x = -15
-67
57
-20
-28
× = 0
-7
12
-2
-10
Answer:
Below.
Step-by-step explanation:
{ a1 = 0.5
{ an = an-1*(-0.2)
The first 4 terms are:
= 0.5, -0.1, 0.02, -0.004
Answer:
(- 1, 4 ) and (2, 7 )
Step-by-step explanation:
Given the 2 equations
y = x² + 3 → (1)
y = x + 5 → (2)
Substitute y = x² + 3 into (2)
x² + 3 = x + 5 ← subtract x + 5 from both sides
x² - x - 2 = 0 ← in standard form
(x - 2)(x + 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 2 = 0 ⇒ x = 2
x + 1 = 0 ⇒ x = - 1
Substitute these values into (2) for corresponding values of y
x = 2 : y = 2 + 5 = 7 ⇒ (2, 7 )
x = - 1 : y = - 1 + 5 = 4 ⇒ (- 1, 4 )
28x+40 add up all of the x’s and then all the normal numbers
