4a^2-7a-28a+49=

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Solution for 4a^2-7a-28a+49= equation:


Simplifying
4a2 + -7a + -28a + 49 = 0

Reorder the terms:
49 + -7a + -28a + 4a2 = 0

Combine like terms: -7a + -28a = -35a
49 + -35a + 4a2 = 0

Solving
49 + -35a + 4a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(7 + -4a)(7 + -1a) = 0

Subproblem 1

Set the factor '(7 + -4a)' equal to zero and attempt to solve: Simplifying 7 + -4a = 0 Solving 7 + -4a = 0 Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -4a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -4a = 0 + -7 -4a = 0 + -7 Combine like terms: 0 + -7 = -7 -4a = -7 Divide each side by '-4'. a = 1.75 Simplifying a = 1.75

Subproblem 2

Set the factor '(7 + -1a)' equal to zero and attempt to solve: Simplifying 7 + -1a = 0 Solving 7 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1a = 0 + -7 -1a = 0 + -7 Combine like terms: 0 + -7 = -7 -1a = -7 Divide each side by '-1'. a = 7 Simplifying a = 7

Solution

a = {1.75, 7}

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