Y -intercept (-1,0)
X- intercept(0,-3)
<em>Let the common root is ‘x’</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)Subtract equation (2) from (1), we get</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)Subtract equation (2) from (1), we get(a – b)x + (b –a) = 0</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)Subtract equation (2) from (1), we get(a – b)x + (b –a) = 0⇒ x = (a-b)/(a-b) = 1</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)Subtract equation (2) from (1), we get(a – b)x + (b –a) = 0⇒ x = (a-b)/(a-b) = 1⇒ x = 1</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)Subtract equation (2) from (1), we get(a – b)x + (b –a) = 0⇒ x = (a-b)/(a-b) = 1⇒ x = 1⇒ {1 + a + b = 0} (From equation (1))</em>
<em>Let the common root is ‘x’x2 + ax + b = 0 ……(1)x2 + bx + a = 0 ……(2)Subtract equation (2) from (1), we get(a – b)x + (b –a) = 0⇒ x = (a-b)/(a-b) = 1⇒ x = 1⇒ {1 + a + b = 0} (From equation (1))⇒ a + b = –1</em>
Answer: I think 9 because on the number line you see 9 x's over the 8
Let's say the TV cost $100
Now if we multiply 0.08(.85(100)) we'll first get $85 which is 15 percent off.
If we choose option A then that will be wrong because you're new total would be $15 dollars instead of $85
Option B when multiplied by .08 will bring the price of the TV all the way down to $6.80 which that doesn't make sense.
Multiplying by 1.08 will be considered as tax and therefore option C is correct.
