4x²-17x-42
=4(x²-17/4x)-42
=4[x²-17/4 x+(-17/8)²-(-17/8)²]-42
=4(x-17/8)²-289/64-42
=4(x-17/8)²-(289+2688)/64
=4(x-17/8)²-2974/64
=[(2x-34/8)²-(√2974/8)²]
=(2x-34/8 +(√2974/8))(2x-34/8-(√2974/8)
=[2x+(√2974-34)/8][2x-(√2974+34)/8]
Answer:
Step-by-step explanation:
<u>Given equation</u>
2^x = -2x + 4
To solve graphically, following steps required
1.<u> Graph the function</u>
2. <u>Graph the function</u>
3. <u>Identify any intersection of the lines</u>
4. <u>Take the x-coordinates of the intersection points and record as solution</u>
<em>See attached, the answer and the solution of the given equation</em>
<u>The solution is </u>
Answer:
12/4 and 3/5 =x42 2 then 3/9 and 2/27 = x24
Step-by-step explanation:
Answer:
n ≤ 4
Step-by-step explanation:
"The difference between a number and seven is less than or equal to -3" translates into n - 7 ≤ -3. To solve, isolate the variable n.
n - 7 ≤ -3
n ≤ -3 + 7
n ≤ 4