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Evaluate the expression for the given values.
8x^(2)+7y;quad x=4,y=9

Evaluate the expression for the given values.\newline8x2+7y;x=4,y=9 8 x^{2}+7 y ; \quad x=4, y=9

Full solution

Q. Evaluate the expression for the given values.\newline8x2+7y;x=4,y=9 8 x^{2}+7 y ; \quad x=4, y=9
  1. Substitute values: Substitute the given values into the expression.\newlineWe have the expression 8x2+7y8x^{2}+7y and the values x=4x=4 and y=9y=9. Let's substitute these values into the expression.\newlineCalculation: 8(4)2+7(9)8(4)^{2}+7(9)
  2. Evaluate exponent: Evaluate the exponent.\newlineBefore we multiply, we need to evaluate the exponent in the term 8(4)28(4)^{2}.\newlineCalculation: 8(16)+7(9)8(16)+7(9)
  3. Multiply coefficients: Multiply the coefficients by the evaluated powers.\newlineNow we multiply 88 by 1616 and 77 by 99.\newlineCalculation: 128+63128+63
  4. Add results: Add the results.\newlineFinally, we add the two products together to get the final result.\newlineCalculation: 128+63=191128+63 = 191

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