Answer:
A = 22a
B = 5
C = 3x
D = 2y
Step-by-step explanation:
Answer:
y = m
x + b
.
y = −
5
3
x + 9
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Answer:
8 • (b + 1) • (b - 1)
Step-by-step explanation:
Reformatting the input :
Changes made to your input should not affect the solution:
(1): "b2" was replaced by "b^2".
Step by step solution :
Step 1 :
Equation at the end of step 1 :
23b2 - 8
Step 2 :
Step 3 :
Pulling out like terms :
3.1 Pull out like factors :
8b2 - 8 = 8 • (b2 - 1)
Trying to factor as a Difference of Squares :
3.2 Factoring: b2 - 1
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 1 is the square of 1
Check : b2 is the square of b1
Factorization is : (b + 1) • (b - 1)
Final result :
8 • (b + 1) • (b - 1)
<span>f(x)=3-2x
</span><span>f(8)=3-2(8) = 3 -16 = -13
</span><span>g(x)=1/x+5
</span><span>g(8)=1/8+5 = 1/8 + 40/8 = 41/8
</span><span>[f/g](8) = -13 / (41/8) = -13 * (8/41) = -104/41 = -2 22/41</span>
3/7
9/28
The second doesn't simplify
