Question

factorise 9s²-42s+49
pls explain with reasons​

Answer 1

THERE IS A GRAPH ALSO

$92−42+49</p><p></p><p>$

$92−21−21+49$

$92−21−21+49$

$3(3−7)−7(3−7)$

$3(3−7)−7(3−7)$

$(3−7)(3−7)$

$(3−7)(3−7)$

SOLUTION :-

$(3−7)2$