Simplifying Expression! Help Please!
1 answer:
Answer
1.
2.
3.
4.
5.
Step-by-step-explanation
1. The given expression is
Regroup the terms to obtain;
Simplify to get;
2. The given expression is
Expand the brackets to get;
Regroup the terms to get;
Simplify
3. The given expression is
Expand the brackets to get;
Simplify;
4. The given expression is
Regroup the terms to get;
Apply the commutative property of multiplication to get;
Simplify;
5. The given expression is
Expand the brackets to get;
Regroup the terms to get;
Simplify;
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All the given equations have 2 real solutions except for equation 4 which has only one real root.
<h3>What is a quadratic equation?</h3>A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The given quadratic equation
where, a = 12, b = -9 and c = 4
x =
x =
x = 1.063 or -0.313
Second Equation
where, a = 1, b = 10, c = -2
substitute the values into the equation
x =
x = 0.195 or -10.195
Third Equation
where, a = 5, b = -1, c = - 5
x =
x = 0.905 or -0.55
Fourth Equation
where, a = 1, b = -8, c = 16
x =
x =
x = 4
Learn more about quadratic equations;