In this question, a word has been given followed by four other words, one of which cannot be formed by using the letters of the given word. Find this word.
Word: CHEMOTHERAPY
Step 1: The task is to find which of the Option cannot be formed using the letters of the given word ``CHEMOTHERAPY."
Step 2: Checking each word:
- ``HECTARE" can be formed using the letters of ``CHEMOTHERAPY."
- ``MOTHER" can be formed using the letters of ``CHEMOTHERAPY."
- ``THEATER" can be formed using the letters of ``CHEMOTHERAPY."
- ``FATHER" cannot be formed because the letter ``F" is not present in ``CHEMOTHERAPY."
Thus, the word that cannot be formed is ``FATHER." Thus, the correct answer is option (D) FATHER.
If the roots of the quadratic equation \( ax^2 + bx + c = 0 \) are real and equal, then: