The answer is C. 4.8+b=6.2
This is because the total amount of berries she bought was 6.2 pounds
She used 4.8 pounds of berries and is left with b amount of berries
If you add the amount of berries used (4.8) to the amount left (b) you will get 6.2 pounds of berries
So the equation you can use to find the amount of berries left is 4.8 + b = 6.2
<u>Solution</u><u>:</u><u>-</u>
Let's find roots of x² - 3x + 2
=> x² - 3x + 2 = 0.
=> x² - x - 2x + 2 = 0.
=> x ( x - 1 ) -2 ( x - 1) = 0.
=> ( x - 1 ) ( x - 2 ) = 0.
=> x = 2, 1.
Now
- ( a + ß )² = (2+1)²=3²=9
- ( a - ß )² = ( 2 - 1 )² = 1² = 1.
So , equⁿ would be ,
=> x² - ( 9 + 1)x + 9×1=0.
<u>=> x² - 10x + 9=0.</u>
