Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

Which of the following values of \(x\) is a zero of the polynomial \(p(x)=9x^2+12x+4\)?

Answer and explanation

Correct answer: \(-\frac{2}{3}\)

Factoring the polynomial gives \(9x^2+12x+4=(3x+2)^2\). For a zero, \(p(x)=0\), so \((3x+2)^2=0\), which implies \(3x+2=0\) and hence \(x=-\frac{2}{3}\). The closest distractor, \(\frac{2}{3}\), gives \(p(x)=16\), not zero. Exam tip: check whether a trinomial can be written as a perfect square such as \((a+b)^2\).

Related tags

PolynomialsZeros Of PolynomialQuadratic PolynomialPerfect SquareFactorisationPolynomials In One VariableMathematicsClass 10 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.