Simplify the following and solve: (recommended use identity)
AdiN05517:
guys, the question is revised
it is "(x - 1){2x - 2(x - 2) +x - 3} = 48"
Answers
Answered by
9
Hello Mortals
Here's the solution,
( x - 1){2x - 2(x - 2) + x - 3} = 48
=> ( x - 1) { 2x - 2x + 4 + x - 3}. = 48
NoTe :- Here in previous step, +2x and - 2x gets cancel out, and remains only x. And +4 - 3 results in 1.
=> ( x - 1) (x + 1) = 48
NoTe :- Here it follows the rule ( a - b) ( a + b)
= a² - b²
So, x² - 1² = x² - 1.
=> x² - 1 = 48
=> x² = 49
=> x = ± 7
Here's the solution,
( x - 1){2x - 2(x - 2) + x - 3} = 48
=> ( x - 1) { 2x - 2x + 4 + x - 3}. = 48
NoTe :- Here in previous step, +2x and - 2x gets cancel out, and remains only x. And +4 - 3 results in 1.
=> ( x - 1) (x + 1) = 48
NoTe :- Here it follows the rule ( a - b) ( a + b)
= a² - b²
So, x² - 1² = x² - 1.
=> x² - 1 = 48
=> x² = 49
=> x = ± 7
Any doubt, drop a comment.
thank you so much
no doubt, it's that clear
♥️
Answered by
0
Answer:
ans = 7
7 was the answer
Step-by-step explanation:
is the answer
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