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### MEAP Preparation - Grade 7 Mathematics2.53 Value of an Algebraic Expression - III

 Example: If a=8 and b=7, find the value of a2+b2. Solution: Substitute the values of 'a' and 'b' in the given equation. a2+b2 = 82+72 = 8x8 + 7x7 = 64+49 = 113. Directions: Find the values of the following expressions and enter your answers in the space provided. Also write at least 10 examples of your own.
 Q 1: If p=3 and q=2, find the value of 2p2+3q2.Answer: Q 2: If x=5 and y=3, find the value of x2+xy+y2.Answer: Q 3: If p=2, q=-1 and r=0, find the value of p2(q-r)+q2(r-p)+r2(p-q).Answer: Q 4: If x=5 and y=3, find the value of x3+y3.Answer: Q 5: If p=3 and q=2, find the value of (p-q)2.Answer: Q 6: If a=3.5 and b=1.5, find the value of a2-2ab+b2.Answer: Q 7: If p=3 and q=2, find the value of 4p2-9q2.Answer: Q 8: If p=3 and q=2, find the value of (p+q)2.Answer: Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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