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### Grade 7 - Mathematics4.27 Simplification - II

 Example: When x=2, 8x3+2x2+3x-5 =73 Solution: For this we substitute the value of x in the given equation and check LHS=RHS. That is first we take LHS = 8x3+2x2+3x-5 and substitute the x value in LHS, we get = 8(2)3 + 2(2)2 + 3.2 - 5 = 8.8 + 2.4 + 6 - 5 = 64 + 8 + 6 - 5 = 78 - 5 = 73 = RHS Therefore LHS = RHS, so the given statement is True. Directions: Check if the given statements are true or false. Also write at least ten examples of your own.
 Q 1: If x=-2, then 3x2-6x+2 = 26FalseTrue Q 2: If x=6, then 3x2+4x-5 = 127TrueFalse Q 3: If x=5, then 7x2+3x+2 = 157TrueFalse Q 4: If x=0, then 3x2-6x+5 = 5TrueFalse Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!

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