Explanation

A biquadratic polynomial has a degree of four, meaning the highest power of the variable (usually x) is four.

A biquadratic polynomial has the general form: ax⁴ + bx³ + cx² + dx + e, where a, b, c, d, and e are constants.

Explanation

When the thoracic cavity expands, lung pressure decreases, causing air to flow in (inhalation).

This follows Boyle’s Law, where increased volume leads to decreased pressure.

Explanation

Explanation

Explanation

Given:

a² + b² + c² = 38

ab + bc + ca = -1

Using the identity:

(a + b + c)² = a² + b² + c² + 2(ab + bc + ca)

= 38 + 2(-1)

= 38 - 2

= 36

a + b + c = √36

= 6

Explanation

Passive immunity is provided to the fetus when maternal antibodies (especially IgG) cross the placenta.

This protection is temporary.

It helps the baby fight infections until its own immune system develops.

Explanation

A complex sentence contains one independent clause and at least one dependent (subordinate) clause.

The dependent clause "Although we were late" and the independent clause "we caught the train."

Explanation

An imperative sentence gives a command or instruction.

"Finish your homework" directs someone to do something, so it is imperative.

Explanation

A square has four equal sides, so the perimeter is 4 times one side.

If L is the length of a side, then Perimeter = 4L.

Explanation

The concept refers to understanding a child’s psychological needs, interests, and natural inclinations.

Hence, it is called Psycho base, focusing on mental development and personal interest.