Answer:
x = ±√11 +2
Step-by-step explanation:
Given in the question an equation,
x²- 4x - 7 = 0
Step 1
take 7 to the right side of equation
x²- 4x = 7
Step 2
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of b, the coefficient of x
2ab = -4x
2xb = -4x
b = -2
Step 3
Take square of b and add it to each side of the equation.
x²- 4x + (-2)²= 7 + (-2)²
x²- 4x + 4 = 7 + 4
x²- 4x + 4 = 11
Step 4
Factor the perfect trinomial square
(x−2)² = 11
Step 5
take square root on both sides
√(x−2)² = √11
(x-2) = ±√11
x = ±√11 +2
<span><span>4<span>(<span>x−b</span>)</span></span>=x</span>Step 1: Add -x to both sides.<span><span><span><span>−<span>4b</span></span>+<span>4x</span></span>+<span>−x</span></span>=<span>x+<span>−x</span></span></span><span><span><span>−<span>4b</span></span>+<span>3x</span></span>=0</span>Step 2: Add 4b to both sides.<span><span><span><span>−<span>4b</span></span>+<span>3x</span></span>+<span>4b</span></span>=<span>0+<span>4b</span></span></span><span><span>3x</span>=<span>4b</span></span>Step 3: Divide both sides by 3.<span><span><span>3x/</span>3</span>=<span><span>4b/</span>3</span></span><span>x=<span><span>4/3</span>b</span></span>Answer:<span>x=<span><span>4/3</span><span>b</span></span></span>
Answer:
trhe answer is literlayy one you f is wrong with you what grade is you 1st grade du b
Step-by-step explanation:
To solve this, you must subtract .56 from -1.64. Then divide that by -5.5x. So the answer is .4
