The value of x is -3
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63x2+76x+21 = 0 (7x+3)(9x+7) = 0 x = -3/7 or x = -7/9
(21x3-23x2-76x-32)/(7x+4) = [3x2(7x4) -5x(7x+4)-8(7x+4)]/(7x+4)=3x2-5x-8
Without knowing the plus or minus values of the given terms then it can't be considered to be a quadratic expression.
To find the value that multiplied by 76 equals 760, you can set up the equation 76x = 760. To solve for x, you divide both sides by 76, which gives you x = 760 / 76. Simplifying this, you get x = 10. Therefore, the value that, when multiplied by 76, equals 760 is 10.
38 is 50% of 76. How can we solve this? Turn the word problem into an equation and then solve. I will break down the words with their mathematical meaning in parentheses: What percent (X) of (times) 76 is (equals) 38 This translates to: X*76 = 38 76X=38 X=38/76 X = .5 To convert .5 from a decimal to a percent, multiply it by 100: .5 * 100 = 50%.