To simplify this expression, we can first distribute the terms:
(5-x)(5+x) + (3-2x)(3+2x)= 25 + 5x - 5x - x^2 + 9 + 6x - 6x - 4x^2= 25 + 9 - x^2 - 4x^2= 34 - 5x^2
Therefore, the simplified expression is 34 - 5x^2.
To simplify this expression, we can first distribute the terms:
(5-x)(5+x) + (3-2x)(3+2x)
= 25 + 5x - 5x - x^2 + 9 + 6x - 6x - 4x^2
= 25 + 9 - x^2 - 4x^2
= 34 - 5x^2
Therefore, the simplified expression is 34 - 5x^2.