Let's solve your equation step-by-step.
x2−2x+1=4
Step 1: Subtract 4 from both sides.
x2−2x+1−4=4−4
x2−2x−3=0
Step 2: Factor left side of equation.
(x+1)(x−3)=0
Step 3: Set factors equal to 0.
x+1=0 or x−3=0
x=−1 or x=3
Answer:
x=−1 or x=3
To find your answer you would divide 21 by 3 which would be 7, once you've got 7 you would multiply it by 9 which would give you the amount of old houses that there is which would be 63.
Answer:
slope is 1
Step-by-step explanation:
take the two ys and subtract and take the two xs and subtract and then put y/x
Hope this helps! :)
Step-by-step explanation:
Subtract the discount percentage from 100%. Multiply the difference by the original price to get the sale price. For example, given a 10% discount applied to a list price of $50.00, subtract 10% from 100% = 90%. Multiply the list price $50.00 by 90% = $45.00, which is the sale price. Hoping this helps.
Answer:
x = 12
Step-by-step explanation:
First you can ignore the squared part for a moment and do
30 - 18 which equals 12
so... x = 12