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To solve this equation, we'll follow these steps:
Now, let's work through each step:
Step 1:
Expand the right-hand side:
=
Considering both sides: .
Step 2:
Simplify further by calculating:
.
Step 3:
Move all terms to one side to achieve zero on the right-hand side:
Simplifying, we get: .
Step 4:
Since the terms cancel, it's actually a linear equation:
.
Solving for , we divide both sides by 37:
.
Therefore, the solution to the problem is .
Solve for X:
\( 3x=18 \)
When you expand both sides, the x² terms cancel out! The left side has -4x² and the right side also has -4x², so they eliminate each other, leaving only linear terms.
Use FOIL for (-x + 7)(4x - 9): First terms (-x)(4x) = -4x², Outer terms (-x)(-9) = 9x, Inner terms (7)(4x) = 28x, Last terms (7)(-9) = -63.
Be careful with signs! is negative, but the correct answer is which is positive. Double-check your arithmetic!
No! Since the x² terms canceled out, this is actually a linear equation. The quadratic formula only applies when you have with a ≠ 0.
Write out each multiplication step clearly: (-x + 7)(4x - 9). Use the distributive property systematically and keep track of negative signs at each step.
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