Verify the Expansion: (4x+3)(8x+5) = 32x²+44x+15

Question

Is equality correct?

(4x+3)(8x+5)=32x2+44x+15 (4x+3)(8x+5)=32x^2+44x+15

Video Solution

Step-by-Step Solution

To solve this problem, we'll employ the distributive property to verify the given equality:

Step 1: Expand the left-hand side expression (4x+3)(8x+5)(4x+3)(8x+5):

  • Calculate 4x8x=32x24x \cdot 8x = 32x^2

  • Calculate 4x5=20x4x \cdot 5 = 20x

  • Calculate 38x=24x3 \cdot 8x = 24x

  • Calculate 35=153 \cdot 5 = 15

Step 2: Combine like terms:

The expanded form is:
32x2+20x+24x+1532x^2 + 20x + 24x + 15

Combine like terms 20x20x and 24x24x:

This gives us 32x2+(20x+24x)+15=32x2+44x+1532x^2 + (20x + 24x) + 15 = 32x^2 + 44x + 15.

Step 3: Compare the expanded form with the right-hand side expression:

The expanded form, 32x2+44x+1532x^2 + 44x + 15, matches the right-hand side exactly.

Thus, the given equality (4x+3)(8x+5)=32x2+44x+15(4x+3)(8x+5) = 32x^2 + 44x + 15 is correct.

The correct answer is Yes.

Answer

Yes