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### Grade 7 - Mathematics2.14 Value of an Expression - III

 Example: Find the value of an expression 2x2+7x+3 when x=2. Solution: Substituting the value of x in the given equation, 2*22 + 7*2 + 3 = 2*4 + 14 + 3 8 + 14 + 3 = 25. Therefore the value of given expression is 25. Directions: Solve the following problems. Also write at least 10 examples of your own.
 Q 1: Find the value of the expression 9x2+7x+3, when x=0.Answer: Q 2: Find the value of the expression 5x2+6x+9, when x=5.Answer: Q 3: Find the value of the expression x2+3x, when x=8.Answer: Q 4: Find the value of the expression 15x2+7x+1, when x=1.Answer: Q 5: Find the value of the expression 3x2+6x, when x=2.Answer: Q 6: Find the value of the expression 2x2+6x+3, when x=3.Answer: Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!