Answer:
<u>13 - 2x </u>
Step-by-step explanation:
(x +2)² + (x - 3)² - 2x²
<em>Expand.</em>
(x + 2)(x + 2) + (x - 3)(x - 3) - 2x²
x² + 2x + 2x + 4 + x² - 3x - 3x + 9 - 2x²
<em>Bring all the like terms together then simply.</em>
x² + x² - 2x² + 2x + 2x - 3x - 3x + 4 + 9
2x² - 2x² + 4x - 6x + 13
= <u>13 - 2x</u> (or <u>-2x + 13</u> )
Answer:
1 whole and 3/5
Step-by-step explanation:
2 x 4/5 = 8/5 = 1 whole and 3/5
Answer:
I think you may have made a mistake when entering the original equation. Assuming you meant to put "n" where you put "b" as the variable, the answer is b) 1/n^-9
Step-by-step explanation:
You simply add exponents when multiplying them if they have the same base. Thus -3 + -6 is -9.
Answer:
2
Step-by-step explanation:
I think the answer is 2, because 2a=4, but when simplified, you can divide both the numerator and denominator by 2, making the denominator 4/2= 2.
