-x^2 -2x-6
Multiply everything by negative one to make X positive
X^2+2x+6
Use quadratic formula
-2+-sq rt of 2^2-4(1)(6) / 2
-2+-sqrt of -20 /2
-2+ 2i/2. -2-2i/2
-2+i. -2-i
Hearts are red, so it's impossible to draw a black <anything> of hearts.
Answer:
27
Step-by-step explanation
Sally = 4 x 3 = 12(left) + 15(spent) = 27
Lucy = 24(spent) + 3(left) = 27 (we dont multiply this part bc Lucy spent 9 more dollars than Sally, 3 x 3 is 9 which equals the difference)
48x^9−72x^7+36x^5 I got this by,
Let's simplify step-by-step.<span><span>9<span>x5</span></span>+<span><span>3x</span><span><span>(<span><span>4<span>x4</span></span>−<span>3<span>x2</span></span></span>)</span>2</span></span></span>Distribute:<span>=<span><span><span><span><span>9<span>x5</span></span>+<span>48<span>x9</span></span></span>+</span>−<span>72<span>x7</span></span></span>+<span>27<span>x5</span></span></span></span>Combine Like Terms:<span>=<span><span><span><span>9<span>x5</span></span>+<span>48<span>x9</span></span></span>+<span>−<span>72<span>x7</span></span></span></span>+<span>27<span>x5</span></span></span></span><span>=<span><span><span>(<span>48<span>x9</span></span>)</span>+<span>(<span>−<span>72<span>x7</span></span></span>)</span></span>+<span>(<span><span>9<span>x5</span></span>+<span>27<span>x5</span></span></span>)</span></span></span><span>=<span><span><span>48<span>x9</span></span>+<span>−<span>72<span>x7</span></span></span></span>+<span>36<span>x<span>5</span></span></span></span></span>
Answer: combine
Step-by-step explanation:
When you combine like terms, it shortens or simplified the equation
Example: 2x-5+15
Combine actual numbers -5 and 15.
2x+10
