-6.5x + 3 < 19 - 2.5x
-6.5x + 2.5x < 19 - 3
-4x < 16
-4x/-4 > 16/-4
x > -4
Answer:
23/25
Step-by-step explanation:
Answer:
-3/4 -8/9
take LCM
<u>-3*9-8*4</u>
36
<u>-27 -32</u>
36
-59/36
Step-by-step explanation:
There's a special case of the quadratic formula called the Shakespeare Quadratic Formula (2b or -2b) that applies when the linear coefficient is even.
If you're planning on solving a lot of quadratic equations quickly, it's good to know.
Here we have
so
Question a:
f(6) = (6)² + 2(6) + 8
f(6) = 36 + 12 + 8
f(6) = 56
Question b:
f(x+4) = (x+4)² + 2(x+4) + 8
f(x+4) = x² + 8x + 16 + 2x + 8 + 8
f(x+4) = x² + 10x + 32
Question c:
f(-x) = (-x)² + 2(-x) + 8
f(-x) = x - 2x + 8