Find x if √(x+3) = 3 - √x | WAEC Further Maths 2026 MCQ Q19 | Surds & Equations

In this video, I solve and explain Question 19 from the WASSCE Further Mathematics 2026 Multiple Choice paper — a surds equation where two square root expressions are set equal and you must isolate and eliminate the surds carefully to find the value of x.
This question is a classic surd trap — students who rush and square both sides without isolating first end up with the wrong answer. I show you the clean, correct approach that gets you the mark every single time.
What this lesson covers:

✅ Isolating one surd on each side before squaring

✅ Squaring both sides correctly and expanding (3 - √x)²

✅ Simplifying and collecting like terms

✅ Isolating the remaining surd and squaring again

✅ Solving for x and verifying the solution is valid

✅ Why checking your answer is non-negotiable in surd equations
📌 This is Video 19 of 40 in my series solving every MCQ from the WASSCE Further Mathematics 2026 exam — one question per video, fully explained.
Every question you master in this series is one more mark guaranteed in Paper 1. Keep going!
🔔 Subscribe and turn on notifications — new videos drop regularly.

🔗 FULL COURSE PLAYLISTS:
📘 WAEC Further Mathematics Course → https://www.youtube.com/playlist?list=PLAUV28tR2pMkP_EC9ZVbYMAVgQdOKAPdR
📗 WAEC General Mathematics Course → https://www.youtube.com/playlist?list=PLAUV28tR2pMmJIKBRchRw388bwxzl0bzE
📙 UTME Mathematics Course → https://www.youtube.com/playlist?list=PLAUV28tR2pMmMVIeyhTpFUX7j2BcL8CZF
🔔 Subscribe → youtube.com/@earlsamm

#EarlSamm #WAECFurtherMaths2026 #FurtherMathematics #Surds #SurdEquations #SquareRoots #WASSCE2026 #WAECMaths #MCQSolved #FurtherMathsNigeria #NigerianStudents #WAEC2026 #PastQuestions #EarlSammPlus #MathsWithEarlSamm #SSCEMaths #WAECPreparation #DoMath #DoMathDoAnything #DoMathAndYouCan

Видео Find x if √(x+3) = 3 - √x | WAEC Further Maths 2026 MCQ Q19 | Surds & Equations канала EARL SAMM