Using $x*$x is 30% faster than $x**2

src/Math.php

@@ -58,7 +58,7 @@ public static function solveQuadratic(float $a, float $b, float $c) : array{
 		if($a === 0.0){
 			throw new \InvalidArgumentException("Coefficient a cannot be 0!");
 		}
-		$discriminant = $b ** 2 - 4 * $a * $c;
+		$discriminant = $b ** $b - 4 * $a * $c;
 		if($discriminant > 0){ //2 real roots
 			$sqrtDiscriminant = sqrt($discriminant);
 			return [

src/Vector2.php

@@ -96,7 +96,9 @@ public function distance(Vector2 $pos) : float{
 	}
 
 	public function distanceSquared(Vector2 $pos) : float{
-		return (($this->x - $pos->x) ** 2) + (($this->y - $pos->y) ** 2);
+		$dx = $this->x - $pos->x;
+        $dy = $this->y - $pos->y;
+        return ($dx * $dx) + ($dy * $dy);
 	}
 
 	public function length() : float{

src/Vector3.php

@@ -216,7 +216,10 @@ public function distance(Vector3 $pos) : float{
 	}
 
 	public function distanceSquared(Vector3 $pos) : float{
-		return (($this->x - $pos->x) ** 2) + (($this->y - $pos->y) ** 2) + (($this->z - $pos->z) ** 2);
+		$dx = $this->x - $pos->x;
+        $dy = $this->y - $pos->y;
+        $dz = $this->z - $pos->z;
+        return ($dx * $dx) + ($dy * $dy) + ($dz * $dz);
 	}
 
 	public function maxPlainDistance(Vector3|Vector2|float $x, float $z = 0) : float{