Let's solve each expression step by step.
(a) 200−32
We can simplify both square roots:
- 200=4×50=250=225×2=2×5×2=102
- 32=16×2=42
Now subtract the two terms:
102−42=62
Answer: 62
(b) (3a3b3)(4ab2)2
First, simplify the powers of the second term:
(4ab2)2=16a2b4
Now multiply the terms:
(3a3b3)×(16a2b4)=48a3+2b3+4=48a5b7
Answer: 48a5b7
(c) (x−2y1/23x3y−3)−2
First, simplify inside the parentheses:
x−2y1/23x3y−3=3x3−(−2)y−3−1/2=3x5y−7/2
Now apply the −2 exponent:
(3x5y−7/2)−2=3−2x−10y7
=9x10y−71=9x10y7
Answer: 9x10y7
(d) x2−x−2x2+3x+2
Factor both the numerator and denominator:
- x2+3x+2=(x+1)(x+2)
- x2−x−2=(x−2)(x+1)
Now simplify the fraction:
(x−2)(x+1)(x+1)(x+2)=x−2x+2
Answer: x−2x+2
(e) x+2x+1x2−4x2
The denominator x2−4 can be factored as (x−2)(x+2). So we rewrite the expression:
x+2x+1(x−2)(x+2)x2=(x−2)(x+2)x2×x+1x+2
Cancel out the (x+2):
(x−2)x2×x+11=(x−2)(x+1)x2
Answer: (x−2)(x+1)x2
(f) x1+y1xy−yx
First, simplify the numerator:
xy−yx=xyy2−x2
Now simplify the denominator:
x1+y1=xyy+x
Now divide the two expressions:
xyy+xxyy2−x2=y+xy2−x2=y+x(y−x)(y+x)
Cancel out the (y+x):
y−x
Answer: y−x
Do you need further clarification or details on any part? Here are some related questions:
- How do you simplify square roots in general?
- What are the properties of exponents used in simplification?
- How can you factor quadratic expressions efficiently?
- How do you simplify complex rational expressions?
- How do you handle negative exponents in fractions?
Tip: Always check for factoring opportunities in both the numerator and the denominator before simplifying rational expressions!