GUYS I REALLY NEED HELP!!
THESE ARE MY LAST 2 QUESTIONS AND I DONT KNOW. PLEASE BE SURE AND I WILL GIVE BRAINLIEST PLEASE SHARE YOUR SMARTNESS!!
3. Which equation contains a difference of squares?
A) 9x^2=69
B) 4x^2-80=0
C) 36x^2-100=0
4. Which factoring pattern should you use to solve 225x^2 -400=0? why?
A) Use the pattern (√a*x + √c) (√a*x -√c)=0 because the values a and c are perfect squares the value of b =0 and the sign between the two terms is subtraction.
B) use the pattern (√a*x ± √c)^2=0 because l b l = √a √c
C) use the pattern (√a*x ± √c)^2=0 because l b l = 0 and the values of a and c are perfect squares
Answers
Answered by
0
Answer:
x = 5/3 = 1.667
x = -5/3 = -1.667
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2
Answer:
mark it in brainlist pls - thx
Step-by-step explanation:
3.
B) 4x^2 - 80 = 0
4.
A) Use the pattern (√a*x + √c) (√a*x -√c)=0 because the values a and c are perfect squares the value of b =0 and the sign between the two terms is subtraction.
reason :- Since both terms are perfect squares, factor using the difference of squares formula, (a+b)(a−b) = a2 − b2
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