Deveraviz
Answered

how to solve this quadratic equation by factoring ??

1. 2r²+11+5=0
2. 81-4x²=0
3. 4s2-12s+9=0

i need help .. plx :)

Sagot :

Rider21viz
1.        2r² - 11r + 5 = 0
         (2r + 1)(r + 5) = 0

2.            81 - 4x² = 0
    (9 - 2x)(9 + 2x) = 0

3.    4s² -12s + 9 = 0
    (2s - 3)(2s - 3) = 0

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