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4)Solve the following quadratic equation byfactorisation methodX2+8x+15=0 |
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Answer» Answer: x= -3,-5 Step-by-step EXPLANATION: x²+(3x+5x)+15 = 0 x²+3x+5x+15 = 0 x(x+3) + 5(x+3) = 0 (x+5)(x+3)=0 x+5=0 ⇒ x=-5 x+3=0⇒ x= -3 |
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